DH volunteer work

[OlgaDePolga]

Will try to keep this short.... DH volunteers within the emergency services in his 'free time'. We have discussed how unhappy I am about this (he works full time 50+ hours, Saturdays/Sundays the only time we/he really get quality time with the 3 DC/if he gets hurt he won't be able to work) but he just doesn't seem to be able to take on board my concerns. It's really affecting our relationship and I just don't really know where we can go from here.
Not sure why I'm asking mumsnet, maybe I'm being selfish...

ExH used to volunteer at a local amateur theatre. He had no DIY, acting or theatrical skills so I'm not sure what value he added. He started when DC were still in infant school because he wanted something to do. It's a shame it didn't occur to him that spending time with his DC would be a worthwhile way to spend his time. We both worked full time too.

Well, obviously he needs to do his half of the childcare / housework before he does any hobbies (and much as it's a noble cause, this is still his hobby). Does he have time to do his hobby after his FT work and his duties at home?

Also, obv you should feel free to take up a hobby too that requires a similar amount of time out of the house. I understand cycling is quite popular? ;P