@TinksThots: You made a lot of great points. I'll try not to be so angry at people that are so picky now. People need what they need and it changes as the game progresses. I accept that. Right now since I'm level 43, with not that many different appliances built (I have plenty of appliances but not a VARIETY...yet), and food that can never stay on the counters, I need both parts and food so it works for me, but that's not the case for everyone. I get that now.
I am also considering to stop tipping. It just takes too much time. Or maybe only tip a few people. I do want/expect gifts daily and quick responses to my materials requests that I send people, but that's about it. I'm afraid there's too much focus on tips though so I'll lose everyone if I don't tip anymore.