Ok, according to many sources, there are differences between "like & would like"
“Like” for general state
“Like” is used for the things you generally love, enjoy . We use like to talk about things we like all the time.
When you like something it means you always like it. Or usually.
“Would Like” for a specific preference
“Would Like” is used to mean “want”, but it is used for more polite expressions.
When you would like something it means you want it (now).
In the dictionary, they say
Would (modal verb): would like, love, hate, prefer, etc. something/(somebody) to do something | would rather do something/somebody did something used to say what you like, love, hate, etc.
I'd love a coffee.
I'd be only too glad to help.
I'd hate you to think I was criticizing you.
I'd rather come with you.
I'd rather you came with us.
I'd hate (= would not like) you to think I didn't appreciate what you'd done. Source
I would hate to lose contact with my old school friends. Source
So, it seems that the above principles may be applied to
hate <> would hate
love <> would love
That is "hate" for general state & "would hate" for specific occasions right?