I'm "acting" like he's the only option because I'm done trying out different managers. We know what we get from Rafa and how high his ceiling is. The man KNOWS Liverpool. His family still lives in Liverpool, why shouldn't we give him another chance? Especially with "better" owners.
Regarding the hate, it's because they weren't that good in those positions. I believe Lucas is a better DM than Henderson, I think Coutinho is twice the player Lallana is, and I also thought Gerrard wasn't that good at DM, I wanted him moved further up the pitch.
Your "hate" for managers other than Rafa and for particular players has bugger all to do with how well or how badly they've done, and everything to do with your monomaniac fixations. You've never "tried out different managers" or waited to see how the players in question would actually do - you've merely waited for the first sign of trouble and then jumped straight in waving your obsessions under everybody's nose for the zillionth time.