OP, I am the last one to counsel you to living your life in deference to what’s going on with your parents. In my family my brother in another state took care of our mother in the same town till she went to a nursing home.
But she had all of her ducks in a row before she got dementia: she told us about money, our names were on her accounts, I THINK he had power of attorney and power of health attorney (csnnot remember) , and she also sold her house and downsized a couple of times, even though the house she and my dad lived in was just a little 900 square-foot ranch with a typical suburban yard.
OP, it is hard to know from your first post what exactly you know about your parents plans. But I will tell you that you should be afraid, be very afraid, if they truly have no clarity on how they will get out of their house and they haven’t talked with you about their finances. That is a Time bomb with a short fuse since they’re in their 80s.
You should have a talk with them about their plans if you truly don’t know about their finances and their next step in living. If they don’t want to talk to you about that, then you’ve done your due diligence and you owe them nothing when the time comes because I guarantee you the time will come when they will expect your help, and you may be off on a .european adventure at the time.
It is always a mad scramble, getting elderly incapacitated parents into a living situation and dealing with their house. There are tight deadlines and big financial impacts and tons of things to do. If no preplanning has taken place, then it is 10 times worse.