Good question ZOOKEEPER and one I've given a little more thought to, over the last 12 months seeing how youngest sd, at 18, hasn't seen her dad (or us) in all that time, because she was told not to have strangers sleeping in our bed, while we were away for the weekend (!!).
Thing is, I had very little left on the sale of my former marrital home. I took a big drop when selling as a) the housing market was crap and b) idmhad a sale get to near completion, then the buyers pulled out at the last minute. So, I then put my "pot" into paying off what was a quarter of partner's mortgage. As it happened, it was one quarter of the house price so, I guess you could say, on our deaths.....MY son gets his "quarter" back again, as it's divided four ways.
However, if my son (God forbid) should die before me...... The property would then split 3 ways. I NOW, STRONGLY OBJECT TO THIS seeing how my youngest sd has always resented me (I get on well with his other two kids.....especially his eldest daughter, who I adore) and I can't ever see she and I having any kind of friendship even. So, yes, should it need to be split only 3 ways, I'd not like that one bit.
That makes me sound dreadful, I'm NOT! But, I don't wish to see youngest sd profit from my death, when she refuses to speak to me in life. IYSWIM