I have little in common with my siblings, so when we get together I always find it painful and exhausting. The conversations are stunted/very limited, our beliefs and views are at odds - even childhood memories are very different and disputed. It's a huge effort with no reward.
One likes to believe we had an idyllic childhood, even saying my memories are wrong, another recalls only the abuse - and I'm somewhere in the middle, having found it tough.
Sometimes I wonder if it's really worth keeping in touch, now that our parents are gone. I'm really much closer to a couple of good friends and they seem more like 'family' to me.
I don't believe that blood is thicker than water. So I may get to be the 'dismissive and hurtful' relative but I'll probably cut contact for a good reason - my own peace of mind.