I'm 29, and it's exactly a year since I came out of my dark age. I first stashed the sets out of sight when my girlfriend came over, but after a couple of months all the Lego became impossible to hide, so I told her I was totally into Lego. Turns out she was fine with it, she even brought me a PoP set from her vacation.
My family and friends now all know and no one (except my mother, who thinks I should "grow up") has a problem with it. I don't exactly get Lego for christmas or birthdays, but I did get a glass display cabinet from my sisters, which I will obiously use to display my favourite sets.
My girlfriends best friends now play Creationary with us sometimes, I guess everyone is getting used to seeing Lego around when visiting us
At stores I get asked all the time (not only before christmas) if it should be giftwrapped, and usually I just say "no", sometimes "no, it's for me", but I don't get strange looks for that. I seem to be the only AFoL in a 100km radius, as there's a lot of older and rare set in toy stores all around me, but that's ok for me. The community is mostly online anyway and I still can buy Batman and Exo-Force sets, which I missed due to my dark age