I think it would be a horrible world if we all told only the strict truth all the time. What a miserable bunch we'd all be.
I have a neighbour who, twenty-odd years ago, gave birth to her youngest child who was one the the ugliest babies I've ever seen. The first time I saw her pushing the pram I leaned over to look at the baby, as you do, ready to say how beautiful she was - and she wasn't. What could I say? The mother stood there looking a bit apprehensive (I think even she knew this kid was seriously revolting) and I had to say, "Oh, she's lovely." I suppose I could have been honest and said she was not at all lovely or been diplomatic and said nothing but I think that would have been worse. How could I hurt that mother? Well, I couldn't.
I'm not an habitual liar. I don't lie about important things but I'll lie to be kind - if I have to. Oh and, Susie, I like your style.
P.S. The ugly baby is now about 25 and ........ not too bad.