I can echo your positive experience but the effect this has on people around you should also be taken into account. On MDMA you're going to want to talk to everybody about everything and that can lead to awkward situations once you've come down. Not only that but upon noticing your gigantic pupils some people might be a bit freaked out or feel like they're trapped in a conversation with you.
TLDR do it around people who aren't going to mind that you're obviously on MDMA
Certainly, but one aspect of my shyness was being preoccupied over what people would think of me, and sometimes it's good to be oblivious you have dilated pupils and you look on drugs. Sometimes it's good not to overthink and just do and see no harm comes of it.
But of course socialising sober is and feels better, though it does not come as easy.
TLDR do it around people who aren't going to mind that you're obviously on MDMA