You're not the only one with a zombie church. The kids my age that go to my church are a bit iffy too... I said hi to one of them last Sunday and he didn't say a thing, but he's just weird anyway... lol.
More to the point, if you're thinking about trying a new church I recommend that highly. It is easier to get involved and to listen to what the pastor is saying if you have friends with you. It is more enjoyable that way! And what is a church family if the family members don't communicate? I can't imagine how terrible it must be for you to go to church, which is intended as a friendly Christian environment, and to not have anyone welcome you or want to make you feel welcome.
I hope your decision will be a fruitful one, and God bless you in the days to come.