wow. ppl sure get worked up about this topic.
do whatever you want. stick your PV up your nose and take a draw that way. pinch your nose shut and hold your mouth closed and blow the vape thru your eyes and ears. whatever works for you.
but if someone is worried about their friends making fun of them because they do or don't inhale, well... that person has bigger problems in life than if they're vaping the right way.
if you wanna inhale, great. if you don't want to inhale, that's cool too. it seems there is a lot of anecdotal evidence that says when vaping the best way to get your nic is to do the mouth/nose thing. i think shadav's last post illustrates it very well. shadav had a chest cold so wasn't inhaling, and got major nic hit just by doing the mouth/nose hit. "...more than when I inhaled" i believe were shadav's words. hmmm...
others in this thread and in others that touch on the subject say that they even taste the juice BETTER when they just do the mouth/nose thing. maybe some ppl use yucky juice and don't want to taste it. again, whatever. i personally like to taste the juice. that's what i pay for - flavor. otherwise i'd vape unflavored - it's much cheaper that way.
but if it's not for you, it's not for you. sometimes i do things that might not be the best way, too. i could sit at a bar and drink a fine vodka straight or even mixed in something, and someone could come up to me and say, 'hey truncheon, you know, drinking your booze is a waste. you know, you get drunker if you soak that vodka in a tampon and stick it up your bum? you're breath won't smell like alcohol, either!" well, all of that may be true, but i'm not gonna stick a booze-soaked tampon up my @$$ just cos it's a better way to get drunk. i prefer to taste my booze. but again, whatever works for you.
nobodys telling you what to do. but there are a ton of vapers who've been doing this a lot longer than me, and there's a mess of anecdotal evidence that says it works better one way over another. some ppl want and/or need the vape in their lungs. others don't. i don't. you do. cool. to each their own. live and let live. just stop acting like ppl are telling you what to do. they're not. and if they are, grow a spine and tell them you will do it however you want. and that advice goes for basically everything in life.