I allowed my husband to have a new hobby 2 years back and I feel it has taken over our lives. His hobby is building gundams. He seems to not understand that there is limits. Am I being selfish or is he?

Well dat is men. However u can try to speak with him. Educating him that family bonding is equally important as his interest. Some men will make sacrifices for the family while some won't. It really depends on individuals. Maybe I'm the lucky one as hubby puts family above everything else. Or maybe the wife is very strict or overbearing.