feel like im going nuts.

just need to vent and I don't have many friends anymore as they had children and thought that meant no one else mattered. I hate my life at the moment, my husband doesn't help with the baby AT ALL. he comes home and goes straight to his little man cave to play guitar or some form of computer game. we have no money after bills but he still buys lunch few days a week and buys strings, new keyboards etc whenever he feels like it. I tried to talk to him tonight about how much he is spending and that I can't even get my hair cut let along have time for a hobby or anything and he said he didn't understand what was wrong and then left the room to play more computer games. I'm fuming!how do I explain to him??