I think the "being stuck" concern is mainly if you think you will be too old to want to work again if/when you come back, or if your job/career is in a field that is very difficult to re-enter once you leave. OP, that sounds like a really tempting opportunity. Because your expenses would be even less than your income, you have some extra leeway as a previous poster noted. If you are able to work a bit if necessary in the EU, either onsite or remotely, that would add another safety margin. You have a young son, and family there you can interact with. Why not try it as a sort of sabbatical if you don't want to commit to forever? Sounds like an amazing opportunity to do something really cool.