My late DH always acknowledged that without my support he could never have attained the career (and earnings) he achieved.
Living away from home during the week and often periods abroac, I was a SAHM looking after 2DDs - later one disabled, with a daily 50 mile round trip to school, at least 6 dogs to feed and exercise, plus my beautiful bedbound Mum and elderly Dad to help too. Chuck in a bit of voluntary work as well.
However, we had always had a joint account, the bulk of the savings were in my name and I did all the financial stuff. He didn’t begrudge me a penny, but his idea of a holiday was a week at home, exercising and training his dogs properly.
I accepted that and arranged holidays at home and abroad for the DDs and myself. Even when DH took early retirement in ‘05, I still did the finances. He was never keen on holidays and they weren’t really on the cards, although I persuaded him to do a Nile cruise (I’d said I’d go alone) and 2 trips to New York.
Fortunately, I was able to holiday with the DDs, friends and my Sis-in-Law and still do.
I think Debbie you might have to accept your DH’s outlook - as disappointing as that is for you. He might enjoy garden centre lunches and walks as my DH grew to, but with your own funds, maybe do your own thing, but worth reminding him it’s your money as well as his!!
I’d also tell him he’s a long time dead. Sounds drastic, but many of us on GN lost our DHs long before their hard earned money ran out!