Thanks for your post, Luigison. You're the only person so far to clearly state your reasons for liking the PS3, none of which are ridiculous and/or made up. All of your reasons pertain to your personal interests, and your argument is aware of the "other side" (disadvantages to PS3 and advantages to 360).
Being a 360 man, I'm finding it difficult to disagree with most of your points, since, again, they're all about your personal interests, and I'm not about to tell you what you like and don't like. But I'll try to stand up for the 360.
Regarding backwards compatibility: If someone is going to buy a PS3 in order to have a next gen system and to not make their PS2 games obsolete, why not get a 360 and keep playing your PS2?
Regarding controllers: I prefer the feel of the 360, myself. As far as Natal and PS3's motion controller, I am mentally disregarding both as pure novelty and generally ridiculous until they are actually released and can be proven to be functional in a beneficial way for gaming, not for quirky gimmick games. Any attempt to include either in the 360 PS3 argument before that moment is pure speculation and a terrible argument.
Blu-ray: PS3 is a cheap Blu-ray player, true, but it sounds like it has some problems. I am unaware of the details on this situation. I don't watch movies very often, so I will leave that portion of the discussion to the ones who do.
I can't say these things are all exclusive to the PS3 because I haven't spent much time with a 360. The PS3 can play almost all media types from almost any source so I use it with Google PS3 Media Server (PMS) to watch home movies, trailers, and torrents. I like the PSN stores offerings. My 80G drive is full because of this. I've download a few movies, quite a TV shows, and a lot of games. I also like letting my PS3 do folding@home when I'm not using it.
Some of the main capabilities of the 360 as an entertainment center are Netflix, TV show downloads, music through last.fm, Facebook, connectivity to other Microsoft products such as the Zune or PCs, the Xbox Live Marketplace (similar to PSN store), etc. I don't know what Google PS3 Media Server or folding@home are, but the rest of the things you listed seem to be covered on 360 as well.
Regarding exclusive games: There is only one game so far that I have really really wanted to play that's exclusive to PS3, and that is Demon's Souls. The only reason is because Lizard Dude and TEM kept talking about it, and they made it sound really fun, and I wanted to play it with them.
RRoD: "Yeah dude this is my fourth RRoD" "This is my seventh xbox" Let me ask you a question: if the RRoD is such a dealbreaker,
why are people waiting so long and paying money to get it fixed multiple times? I'll tell you: because the 360 is totally worth the repair costs and 3 week wait. They're having so much fun with their 360s, they're willing to wait to get it back so they can get back to playing Live with their friends.
Online gaming: I am aware that Xbox Live costs 50 bucks a year and PS3 is free. But you get what you pay for. I have never played PS3 online, so I can't personally attest to Xbox Live's superiority, but I find it very difficult to imagine any type of online gaming experience that is better than Xbox Live. I'm going to trust Lizard Dude's judgment on this one, and his first reply clearly puts the nail in the coffin for this argument. Even he was skeptical before he actually played a 360, and now he knows what's up.
Also, a majority of gamers have a 360. The best thing about playing games online is playing with friends, and I have a lot of friends who play 360. Case in point: I unexpectedly played four hours of Left 4 Dead 2 last night with a full 8-person party consisting entirely of people I know. I don't think I've ever had more fun playing a video game. LD is a witness. We probably wouldn't have stopped if it wasn't four in the morning.
Oftentimes I'll buy a game on 360 specifically so I can play with friends, which is why I got L4D2 on 360 instead of PC.
I think WarpWrattler is failing to make good arguments because he is tainted by the fact that he only plays shoot em ups and that he has never actually played a 360 (and maybe even a PS3).
That goes for the rest of you, too. Don't make stupid arguments about the 360 or PS3 if you've never played either one. Weegee.