If that is what YOU want to do. Forget about him and do what makes YOU happy!
Do not worry about his feelings
Seconded, he doesn't seem too concerned about yours.
Re GAL
Yes, you have friends, make some new ones too. Join one of those meetup groups as I suggested, get hubby looking after the kids for the evening, he should jump at the opportunity.
Get out there and get chatting to fun people, and shock horror some males too (just chatting, no more). don't come home before midnight. See how things change when your cell starts blowing up with texts from your new social life. Even if he doesn't notice, who cares anyway, your doing this for you!!