Q: "How was your date last night?"
A: "He/She/It was nice."
See what I mean? Nice is affable, amiable, agreeable and.... wait for it.... BLAND.
People use the word nice so casually and as a catch-all so often for anything that is non-offensive, that it has actually come to mean "non-offensive" when used in actual conversations.
Nice does not mean kind, interesting, exciting, fun, honest, worthwhile, etc. A nice person would not tell you if a booger was hanging out of your nose.
If nice is the first adjective, or the only adjective that comes to mind when describing something or someone, then I probably would not like it or them.
Nice when used as a primary description or as a stand alone description = Garbage.