Mine never seemed to want to go anywhere either.
On the odd occasion he did , by the time he'd made it clear we were all in his way whilst he was getting ready and leaving leaving til the last minute I always just wished I hadn't bothered waiting for him. I dunno there always seems to he a condition/cost to dragging him along on family life.
When I learnt to drive but still opted to get the bus/train sometimes it seemed to provide the ultimate excuse and he refused to come if I didn't drive ( I hate driving and we have a really good bus/train service and I always enjoyed the chance to interact with the kids on the journey in a way u just cant do in a car and make a day of it with the train etc
I did go out without him.sometimes.
We split up nearly a yr ago . Amongst other things not going out and doing anything with the kids was a big factor. What's the point if u don't share the load. All he ever used ti do was send me cash I didn't need and didn't ask fir ajd I was the one who had to do the shoe shopping, the taking too and from stuff, the clothes shopping etc
The only place he ever went was to his friends house and occasionally the pub with work.collegues. he could manage that of course 
I think we went to the cinema a couple of times .
Course now my work.hlurs are all fitted around the kids and around his working patterns so I can't really go out and when I am free it's during the day ajd everyone i know locally is at work.
Fun times.
Still better than living with a miserable partner who never wants to do anything though.