Do You Agree(Lie) to Avoid Raining on Someone's Parade?

I was pondering this last night. I am a pretty agreeable person. If someone shows or tells me something that they are excited about, I usually give them affirmation regardless of if I actually think that it is interesting, exciting, or "good."

I am a bit of a music nerd across many genres. My girlfriend put on a band that she really likes last night, and I didn't think that it was bad or anything, just not my thing, and I wasn't that impressed in a music sense. She kept going on and on as we were listening about how and why she thought that they were so good. Instead of telling her how exactly how I really feel, I just kind of agreed with her that I also thought that they were really good.

Its no skin off my back to just agree with her, and I don't want to be a dick and break down why I disagree with something that she really enjoys. Its just music. But I was thinking about it last night, and I actually do this a good bit with friends, family, co-workers. Nothing of any real consequence. Its all pretty subjective. If I do feel strongly enough about something, or if its a question of ethics or morality, I will certainly speak up.

I don't really see the harm in it, but I am indeed lying. I am doing it as to not make that person feel bad, or question what they like. I try to not be a Debbie Downer.

Does that make me a liar?