I DO have some personal experience in this area, and the answer is NO, it doesn’t make it any easier. At least in my case, and with relative small amounts of money. If there were millions, maybe it would, I dunno. But our family dynamics are so screwed up, this might bear no relevance to someone else’s situation.
My parents, in Chicago, had 3 kids; me in DC, my Good Sister® in Madison, and our Evil Sister® in Milwaukee. My mom was chronically ill for about 15 years. My sister in Madison was down in Chi helping out almost every weekend. Me, maybe half a dozen times a year from DC. Evil Sister, NEVER. Why my dad wasn’t real helpful is an issue for other threads.
When my Good Sister started to burn out, I moved to Madison so we could split up caretaking duties. Evil Sister never once lent a hand.
When mom died, Evil Sister’s only contribution was hourly phone call to us, her sibs, demanding that we stop the meeting between dad and the funeral director, because SHE wanted to make the arrangements. When could she get here to make the arrangements if we did this? Well, she didn’t know, she would get there when she would get there… and we apparently could all wait, indefinitely. That didn’t fly, as you might guess.
Dad died a few years later, without a will, so we sibs all got an equal share. We really didn’t care. We’re talking about $100K or so, not a big amount split 3 ways.
However, my Good Sister and I have both excluded the Evil Sister from our wills, and left most everything we have to each other (we are both single and childless).