I like walkthroughs because I don't like missing content. My time is limited enough so replaying games is not something I do often. I still like there to be a story and choices but knowing what the choices do helps a lot!
i like games with a dedicated walkthrough for after ive already played it can want to 100% it. i don't want a game where its easy to softlock or hardlock yourself out of gameplay if you dont have a walkthrough
For VNs it's nice when one is built in, and if one is required because there's substantially different story branches off of different choices, then that's nice design, too. Moreover if those choices aren't OBVIOUSLY intuitive as to render a walkthrough moot, but not so obtuse as to seem unbelievable.
Generally I enjoy the games that have a walkthrough, but not one that is ON YOUR FACE. So if I have to click somewhere to request a hint or get some tips, or just get a reminder for timed events, great. The way most walkthroughs are for lewd games is just giving the answer and making it not feel like a game at all, so that one I am against.
I like games which give you the option of adding a walkthrough mod.
This said, I have an issue with those requiring specific, often counter-intuitive choices to advance the plot. Like Seaside Mystery or the Twist by KsT.
A lot of games have content hidden behind esoteric requirements or things that aren't immediately obvious.
It also just sucks to miss things in general, or to go back for things
It doesn’t bother me, in fact, sometimes I actually prefer it when the game has them, because I don’t have all the time in the world to devote to a game like this...
For multiple endings or easy to miss sidestuff it's nice to have a walkthrough.
And first playthrough should always be without a walkthrough in my opinion.
For virtual novels I usually just use a walkthrough mod. I don't want to be locked out of a scene because I missed a choice 3 episodes ago. Using a walkthrough solves that