I'm in my 30's too. I still play baseball, as do my 3 boys. Almost all the people I hang out with love baseball and do care about it. I also love basketball. I'd say half the people I hang out with love it too.
I understand baseball isn't huge with the younger generation and that MLB needs to do a better job. I don't think 2 weeks of it being the only sport on TV is going to save the game. However, the original point was you said that nobody is going to care about a 48 game schedule. That is false.
You never know - a 48 game schedule might actually engage the younger generation as every game matters (something the full 162 game grind doesn't give the impression of).