One by one.
-Economy- It's gone downhill in the early nineties, uphill for most of the nineties (at least domestically), downhill in the early millennium, uphill for most of this decade, and then downhill right now. I don't see it as having gone uniformly downhill. And no one can predict, as with any other downturn, how long it will last with much certainty. So the economic forecast is ambiguous, as it always is.
-Environment - You have a point here. At least environmentally, we're really screwing ourselves over in the long term. This goes for drastic climate change as well as pollution and overuse of fresh water, and so on.
-Size of little Debbie snack cakes (possibly due to me getting bigger them staying the same size) - They seem the same size to me. I don't eat them much nowadays though. Those zebra cakes are over 300 calories!
-Unemployment - Tied to the economy. It's been going up quickly for the past year or so. Again, there's no telling whether that's a short or a long-term adjustment.
-gas prices - The price of gas today, adjusted for inflation, isn't that much more than it was in past decades. If this was a year ago, I'd be more inclined to agree.
-Cost of college education - Yes, this has been a big problem. More people go to college, more people demand more for their college education, universities implement new technologies for their libraries, their labs, and their athletic facilities, the higher administration gets paychecks equivalent to some CEO's paychecks... so, yes, another point for you.
-TV programing - I like what's been on lately better than a lot of the canned sitcoms from the 80's. I also like a lot of the cartoons around now, as well as the anime. In this case, I think there's just more TV channels, so there'll be more good and more crap. And yes, reality television... again, some have done it well (I'd argue Project Runway and a few other shows know what they're doing) and some are the bane of existence (Fear Factor).
-culture (maybe i just don't get the emo thing, and i'm not watching twilight i'm a guy) - This is too broad a category. If you mean particular youth subcultures, there's far more out there than emo. Twilight isn't the summation of all culture either. That's like me saying the past twenty years have gone downhill because of the proliferation of romantic comedies. What do you mean by culture?
-TVs themselves i honestly don't think HD tvs are any better i only like hat they're lighter weight - I like my TV just fine compared to the one twenty years ago. They can be bigger, they can take up less space, they can show more pixels, and they can use video formats that show a higher level of detail.
-Music srsly nothing worthwhile. bonus I challenge you to find originality in music after the 70's - Very subjective, and I know we're going to disagree here. What do you want from originality?
http://en.wikipedia.org/wiki/Neptune_(band)? Rap in the past 30 years has diversified and proliferated. I think Michael Nyman and Philip Glass are both doing very interesting stuff. Video game music has proliferated, as have new forms of synth-pop, J-pop, and so on. And then there's Enya. And I'm not even very good at knowing music. Others can say more, I'm sure.
-social security that we will have paid and not get any of - I think you can opt out of paying social security, in return for never getting it at all, if you want. Yeah, pay as you go turned out to not be such a good idea for the upcoming generation. I think you have a point here.
So, I think you have three points, two points which are more short-term than the twenty years you cited (the economy and unemployment), and otherwise I think you're overgeneralizing for the sake of a uniform downhill trend.