I'd keep the money and see what your brothers do with their money before you give them your money.
There's not enough information and too many variables to tell you what we would do.
How old are your brothers?
Would this money give them enough to buy a house each?
Would they even want to buy a house? Or would they use it on a round the world cruise, or blow it in casinos and strip joints? That would make a difference for me.
Why have their lives been harder? Through poor life decisions or choices out of their control?
Why has your life been easier?
I'm 42 and I've been mortgage free for over a year. My husband works his arse off and I don't work. I have contributed at times when I've received inheritance or gifts from my family. I paid half of the house deposit out of what I had saved whilst working, and my savings covered a my half of the mortgage for a year. My life has been easy because my husband has worked hard. My husband won't inherit. His mum blew what she'd inherited on a holiday for her and his elder sister. His dad "lent" the sister £34k (because she hadn't bought and she "had it harder". Her and her husband were earning 3x what my husband earned but had active social lives and spunked money up the wall), which she never paid back and their dad shortly after.
I should inherit but I'm not banking on it. If I do inherit though, I'm not going to start banging on that it's my money because my husband has supported me financially for 14 years. We've taken the kids around the world too, and the kids have visited nearly 60 countries and 20 US states, some a few times. If I was working my arse off and paying for most things, or if my husband was like my ex and would divvy the shopping up in queues so that it would be pretty much 50/50 or I'd owe him and would have to make up the diffence the next day! If we'd have had smart phones and banking apps back in the day, he would have made me transfer 5p difference right there in the queue. (I was earning around £15k temping, he was in IT earning £35k, nearly 20 years ago). So in that scenario I'd be feeling a lot less generous about it! Sod that!
Do you have kids? Do your brothers have kids? Their kids could inherit money that your mother may have expected to go to your child(ren).
Have your brothers been in your ear about how much better off/lucky/fortunate they are? Because if they have, that would be concerning.