I'm 33 and got back into Lego after my 30th birthday, via the Collectible Minifigures. My job and family keep me pretty busy, so I am mostly just accumulating Lego at the moment (buying bargains on Amazon via brickbadger.com), and then giving sets to my kids for birthday/xmas and at random other times (read: "whenever possible"). I have a lot of unopened sets from the last two years, up in the attic and in wardrobes.
My son is 5 and he loves all the super hero sets, which I have bought, but he's only had about half of them so far. My daughter is 7 and is into playing with Lego Friends, but not that interested in building the bought sets themselves, but builds her own stuff to go with it from my bricks.
I am mostly in consolidation mode at the moment, trying to organise all my Lego parts, in readyness for starting a town-based project. I used to build my MOCs in top-down fashion, but am starting to think the standard Lego way of having no back is the way to go. I plan to build a hotel inspired by the Daily Bugle Spiderman set at some point soon, most likely from all the parts from the Tower Bridge set I bought a while back on sale from Amazon.it. If someone wants to point me at some more inspiration, I'll take a look. :)
p.s. I'm Gondorian because I'm a big LOTR fan. The Tower of Orthanc set is very very tempting!