My parents (divorced) unfortunately both passed away a while ago. Any money I received from their estates (split with siblings) I saw as joint with my husband. We share finances and have done for a long time. Therefore any inheritance is as much for my DH as me. We support each other financially. He didnt get an inheritance from either of his parents. Its not 'my' money, , its ours. And it will ultimately help our kids.
My eldest DS in his third (and last) year of uni. By the time he graduates his student loan will be not much short of £50k and that is the minimum student loan. He's on plan 5 so will be paying it back for 40 years. Contrast that to me and DH who got a grant and all fees paid when we went to uni ourselves! As DH's salary and my carers allowance JUST tip us into the band where DS gets no maintenance loan, we're supposed to pay him the difference which is approx £7k per year. That doesn't even pay DS's rent! He pays £140 per week, I paid £28. He also pays over the summer as its a small city and the landlords have the market wrapped up so 99% of contracts start in July so there's no way of getting out of it if you want accommodation there. His rent is cheaper than most as he lives a long way out and has a 30 minute cycle in. Uni is so expensive! I also get him a shop when I visit, and our cost savings at home dont really cover this. We obviously support him as much as we can, but its a huge financial drain. And its only DS that will be going to uni, his sibling has complex medical and developmental issues so wont be going.
Hence money is a huge issue at this point in life. We want to support DS as much as we can as he already has racked up huge debt, we'd like to help him out with getting a first car, we helped him out with driving lessons, and when he comes to get a house he will need a huge deposit. He has got a casual job but we've basically kept him for free when he comes home to allow him to save a bit. But again that costs us.
Just pointing this out as my/our inheritance is being used for this, and for us to enjoy life at the moment by going on holiday and to maintain how we live. I know we are fortunate to be able to do this, but I'd much rather have had more time with my parents and my kids to have had their grandparents than the short time they had. I know their grandparents wanted the best for all of us, so we're using any money for all our benefit, not just one person. I think your DH is being very shortsighted.