Ok so if you got let's say 4% (Wise) on USD, after five years with 6.5m you'll have got 1.3m in interest, so the house is basically rent-free. I wouldn't call 4% high interest as I've looked for high interest, but to cover the rent I see where you're coming from. I'm looking for around 10% on capital of €300k - to live off.
Facebook is great for getting info and advice, it's just plagued with morons who live on here and have nothing better to do than broadcast their unemployment, general ignorance, or signal their virtue. Unfortunately only good moderation can maintain standards in any given group. Moderators should be rewarded for their time and effort. It'd be worth paying a fee for some groups to keep the trolls out IMO.