To me, "for me" and "for my use case" mean subtly but genuinely different things.
"For me" highlights the fact that my preferences, character, skills, etc., are different from other people's. Something might work well for me but badly for someone else because I happen to be good at working around its quirks, or bad at noticing its faults, or just not interested in the things it doesn't do.
"For my use case" highlights the fact that the things I need to do are different from other people's. Something might be good for my use case but bad for others' because I don't need very high performance but they do, or because I need the gostak to be able to distim the doshes backwards but they don't.
If I move on to doing different work and someone else takes my place, I expect something that works well "for me" to continue being useful for me but not for them, and something that works well "for my use case" to be useful for them but not for me.