Truthfully I wouldn't invite a soul. I am a person with a front facing customer centric job and I don't care to deal with other human beings after I get home from work and the couple of classes I do afterward. If I feel like playing an MMO I'll turn on Warcraft. Every time I do though I am reminded about how people on MMOs behave and frankly the idea of having to read or hear political garbage and conspiracy theories when I'm trying just play my game makes me physically ill. As for family and friends even if my sister or any friends played this game I wouldn't want her it my game and nor do I think she'd want me in hers. I play for my own pleasure not to be a source of entertainment for anyone else so I simply wouldn't add to anyone experience.
I have purchased every Sims product since Sims 1 except for Modern Menswear Kit (The clothing was hideous). I wouldn't put a dime in any online Social Sims thing. If you're interested in that by all means champion your cause. Be careful what you wish for you just might get it.