Don't apologize for telling me what you think and feel, okay? That's fine, that's good.
About weakly-taken positions, I think that's good for the same reason, to sit down for a discussion and say "Well, I honestly don't really know!" Because at least you're clear about that, too.
At least you don't end up in the paradoxical state of strongly defending a weak opinion, that way, when you say honestly that you don't feel strongly or know for certain.