While I'd rather Hollywood produce more original works, I'm a realist.  I truly don't mind them making the remakes, because I don't believe that the remake necessarily takes the place of an original, creative idea.  I don't think remakes detract from the original either.  For example, how many people checked out the original Texas Chainsaw Massacre after having heard of the remake.  Perhaps I'm an optimist, but I'm guessing that the original has at least two or three more new fans, based upon the awareness the remake brought with it.

Ultimately....the sad truth is that the average movie goer really doesn't care about the originals anymore.  They may not know they even exist.  The suits know it...we know it.  It's just too easy to cast the newest WB stars, film a remake, and expose a new generation of filmgoers to the story. 

To me, there are no sacred cows.  They can film whatever they like.  The original will still be there.

As far as Clash Of The Titans;

I enjoyed the movie for what it was, but even then I knew just how mythologically inaccurate it was.

1:  Titans ruled the earth and the heavens before the gods.  Chronos swallowed all of his children, until his wife tricked him into swallowing a boulder rather then her son, Zeus.  Zeus killed Chronos, releasing all of his brothers and sisters.

2:  Medusa was a gorgon.  One of three.  She was human once and very beautiful until the gods, jealous of the three cursed Medusa and her two sisters.

3:  Perseus had winged sandals.  It was Bellerephon who rode Pegasus...in fact, I don't think Perseus was involved in the Medusa story at all.  If I recall correctly, it was actually Bellerophon who while flying casually past killed the Kraken with Medusa's head and saved the girl..not Perseus.

There were other inaccuricies, but I don't recall them off hand, and my knowledge of Greek mythology is a bit rusty, but all in all, Clash Of The Titans was wildly inaccurate.

But I was a nerd, and I would guess the general public either didn't know or didn't care.

As far as a remake?  No, thanks.  Though I wouldn't object if Hollywood mined the old greek legends for more stories.  I enjoyed Clash Of The Titans.  Good cheesy fun.  Plus Harry Harryhausen....

Doby Doby:  I actually agree with you.  The original TCM did nothing for me really.  It was good, but I think way overblown.  Of course we're in the minority here, most true horror fans really dig the original and I will admit it was a ground breaking movie, but I can't say I'm a real fan.  Sure, the remake looked glossy in comparison, and because of that, lost some of the grit and perhaps realism of the original....but....one of the two Jessicas in a stained tank top....R. Lee Ermey...good times, my friend.

As far as The Omen and Amityville Horror remakes, I have yet to see them, I have no real desire to do so, so I can't speak to them.  You're on your own there Dobe Dobe..good luck. 
Edited to add my controversial thoughts concerning the original TCM and to show solidarity with Doby Doby.  So he's not all alone out there.

Obviously you have never seen The Fog or When A Stranger Calls.. or Amittyville Horror, The Omen. Those films were cinematic garbage. Even if you did "like" it. They were very poorly done. In one way or another.. MTV edits, acting, poor scripts, rushed out for a certain release..

I liked The Amityville Horror and The Omen remakes. I also like the originals. I think the TCM remake is a lot better than the original too.

As for TCM...down right hated it

I remember I handed my teacher a VHS copy of the original and said here's the original for a movie day and he popped it in.  Folks were like 'what the hell is this crappy film?  Whats so great about it?'  I loved (and still do) the original Kong when it came on AMC Saturday Morning Movie.  I guess you have to see it at a younger age to really enjoy its full power.

But, like you said...no excuse for not hearing of any of the originals.

I know a lot of folks who think that TCM was a real event...kinda funny in a way.  The most horrifying thing for me though was the fact all but myself, two other movie fans and the teachers at my high school thought that King Kong '05 was an original film.  They didn't know about the original, nor the Jeff Bridges remake.  This was confirmed when I stormed into school the next day after skipping class, eyes still wide with wonder gushing over the film and the battle at the end with Kong dying.  SO many folks told me I ruined it....they never knew it was a remake and the planes attacking Kong in the trailer on the Empire State building...it never registered he might die.  One girl thought he would be knocked out cold and transported home.  *She's blonde:P*

My biggest annoyance is that people watch the remakes and then the originals and say how crappy they are.  'No cute girls, no big action scenes' and the like.  Gawd, annoys the hell outta me.