I have 16GBs as well. I find it's sufficient for what I need it for!
Yep. This conversation is deeply relative to your own usage.
Yes, I find that for myself it's more than enough. When I go my PC 16GB was seen as being excessive at the time — even for being a gaming computer. I've done some upgrades since then, but I don't find myself wanting in particular for additional RAM, but I understand where those might want the extra wiggle room.