I wouldn't count non-literal use of language (“it was okay” when it's obvious to both interlocutors that the actual intended meaning is ‘[it sucked but I don't want to hurt your feelings]’) as lying.

But still, I prefer to be with people to whom I can also say why it sucked (so they get a chance to do better the next time) without hurting their feelings either. I can't choose my own parents and I can't choose whether the Nazis will come to my door, but I can choose whom to interact with in most other situations (excluding NPC-like situations, where topics I'd want to withhold my opinions about aren't likely to come up in the first place). Feeling like I'm walking on eggshells whenever talking to someone is not a pleasant sensation and kills most of the fun of talking to them in the first place. (YMMV.)