I'm very heavy into music and whilst I see your point and the mainstream music at the moment is certainly a lot better than it was a few years ago, I still see why people will tear your opinion to shreads.
Basically you're a casual music fan, the stuff that bubbles beneath the surface tends to be much better, when you look at bands that have made it big 9 times out of 10 their stuff was a lot better than it was before they had their big breakthrough, I think Modest Mouse are the latest example of this where the edgey and unpredicatable sound has been stripped to its bare, it's not bad but it sort of shows what the mainstream MAINLY is, music stripped down to it's bare bones, the isn't enough to warrant repeat listens and this only becomes worse as music played on the radio is designed to be played on a radio... car stero, those cheap things, so everything is compressed to fuck which makes it seem like it has more pressence on a cheap piece of kit but as soon as you venture into the headphone realms from brands such as Bose and Senhieser you get a fucking headache, no this isn't opinion, it isn't the music is bad, it's fact... it's all compressed to one frequency, one range and one volume so everything stands out so it lacks any depth or dynamic which causes headaches after a short amount of listening time (Flaming Lips are an example of a more credible band that have been recently let down by this)
Whilst I'd say Lady GaGa, Rhianna, Justin Timberlake & Girls Aloud are certainly the best things to happen to pop music recently, Kanye West & Jay Z pretty much signle handedly saved us from gangsta rap saturation with interesting and diverse beats, I'm not a big advocate of pop, but do you know what REALLY gets me down, it's not the pop acts, they know what they are.
It's those fucking faux alterrnative bands like Papa Roach, Owl City (most recently), and most the stuff played on Kerrang and MTV2 in general... and those 'Indie' bands that came out about a year or 2 ago which now seems to be 'indie' dance they discredit entire scenes, and thats unforgivable. But it's not so much the bands, it's the people who turn a nose down to pop music who like EXCLUSIVELY bands such as 'Nickelback' 'Foo Fighters' 'Hinder' all that generic (understandably foo's used to be good) which is at the end of the day mainstream music, it's not alternative so if you're posting here with the superiority based on what I just said, you owe the orignal poster and apology as you're doing the EXACT same thing, just because it has a guitar doesn't make it any more credible.