I think its fair enough to keep some for yourself but I think its such a huge amount for the family I'd share it. Maybe have the amount you thought you'd originally get rewarded? Also doing something like clearing the mortgage benefits you just as much as your husband and then you'd also have so much more disposable money between you every month?
The reason that I'm erring at it really being family money is that you share money equally so when your husband has been earning more than you its all gone in the pot to be shared, I therefore think all money should really be treated the same?
My DH and I pool our finances and when my Dad passed away and I got some inheritance (5 figures but enough to pay off the mortgage) I put it in the pot. Sure it was my Dad, and he meant alot more to me than my husband and I was going through more pain, but I really wanted to put it in the pot for our family's financial security. And for my husbands part, after I came back from mat leave, tried to go back to work and then struggled with PND so quit my job to save my mental health to be SAHP for a year my DH continued putting his entire wage in the joint account, even when he got performance related bonuses, everything was shared.
But as I said, I also think its fair that you get to keep a portion to treat yourself, surely there can be a compromise between shoving it all in the pot or keeping it all for yourself?
I mean your husband disagrees with you keeping it all, and like your husband I would probably struggle if I was in his circumstances. Sharing all the money I earned, and then when my partner got a 6 figure windfall, they kept it all to themselves. It does feel a bit like whats yours is mine and whats mine is my own. Xx