Hmmm.. an interesting one. For the right home, I’d consider it, but it would be subject to the balance of a few things. Now, obviously dream neighbours are great, but they are not the be all and end all most of the time, unless they really are a problem, in which case, massive headache!! Only you’ll know what you’re willing to accept and tolerate and for what cost. For me though, the things I would consider are….
-How old are they? (As in, will they live a long time? Sounds like they’re there to stay, as in not likely to move).
-How much would it actually impact on me in practical terms day to day? They sound paranoid so therefore very private etc., Now, personally this is probably a flavour of crazy that I would prefer over others. I initially thought not very much impact really, but saw your follow up post about screaming at the people 🤷♀️ obviously, again, is that rare? It could just be paranoia tipping, and we don’t really know the context.
-They may well not feel this way about you OP as new neighbours, however, I suspect they’ll still be suspicious, private, and eventually develop their own paranoid crazy against you, you’d just have to wait and see.
-Are you going to have to deal with them much over anything like a shared driveway or fence or anything?
If it’s a detached house, space, no real reason to interact, and just need to tolerate hostility, and signs being put up, I think I’d probably be able to laugh that off and enjoy my new lovely home. Nothing is perfect, you’ve got to pick your compromises 🤷♀️
Maybe get security cameras or something if you do though, just so you can back up any nonsense claims against you. Let them be crazy in their own space. At least they probably aren’t going to be parking in your drive way!!! 😂