Who do you play most often and why?
I've seen plenty of those "Who do you play threads" but I wanted to do one more in-depth. Who do you most commonly play in what lane? Why do you play them there? What do you build towards? What abilities do you start with?
I use as follows:
Middle: 
Items: Rush 
against another MP champion or 
against an AD champion, then build depending on the other team. ALWAYS get max cooldown.
Abilities: One in Q, then one in E, one in W, then max E, R when possible, max Q, then W last.
Why: 30 second cooldown on massive laser. Enough said.
Top: 
(I know how high his skill-cap is, but that's why I like him. Plus, 
can't touch me.)
Items: Rush 
for ability spam then build 
for attack damage and life steal. 
afterwards and then 
.
Abilities: Start with Q, one in E, one in W, R when possible. Max Q first, then E, with W last. Switch Q & E when going against a tank.
Why: I love people able to poke people down before jumping in to get the kill. Plus the way E works against tanks is extremely helpful.
ADC: I haven't found an ADC I really like yet, I tend to use whoever is free. If I feel like it I'll run Jayce ADC.
Support: 
Items: Classic support items, then build some AP on the side. I always get 
because it works great with his passive.
Abilities: Start with Q, one in W, one in E, R when possible. Max Q, then E, then W.
Why: He's not only a top tier support, Thresh is just insanely fun to play.
Jungle: 
Items: Rush 
, then 
to later build into 
. The rest I tend to build depending on the other team.
Abilities: Start Q, then W, then E, R when possible. Max Q first, then R, then W. I like evolving E first to help with ganks, then Q for surprising people who wander off, and finally R to boost my survival rate and escape speed.
Why: The burst damage is unreal.
Alright, there's mine and I know some of my builds aren't the greatest, but being only level 19 I'm still learning. So, let me hear from the rest of the community.
or this hooker
, Big Bad Wolf 
, Xin 
- He's a fun jungler, amazing if you can get ahead.
rush his hexcore upgrade if i can
e-q-w-e-e-e-e-e-e-e--e-e-e-e-e-e-e-e-e-e
I LOVE HIS DEATH RAY
or 
always rush spirit elder, usually 2 longswords before spirit stone because i gank a lot
max e on shaco first, q on lee sin
i jus like to gank people?
Items: In no specific order
Other situationals as well.
Abilities: Start Q, 1 point in E, 1 point in W, then max Q 1st, then E, then W
Why: Being a tank at the front line is one thing, Literally blocking everything with a large shield and leading the charge into a battle is another, much more epic thing. He gives a feeling of being the true defender of the team and saving all those who are under you're protection.
ADC: 
Items: Generic ADC with CDR boots.
Abilities: 1 point in Q, 1 in W, 1 in E, then max Q, E, and finally W
Why: Being a agile gunslinger is something I've always loved doing in most games that I've played, and Lucian fills that role pretty excellently
Items: Generic AP build
Abilities: 1 in Q, 1 in W, 1 in E. Max Q, then W, finally E.
Why: I used to play Veigar, and old-school burst mages are probably some of my favorites, so Annie fits right into my mid lane style.
Janna Support (this I know how to play)
**Why: **She's very good at keeping her team-mates from dying, a support isn't required to last-hit, and her ult is one big NOPE. I like the vision control and clutch save aspects of supporting, and Janna's good at that (passive + W passive give MS for ease of roaming, and her ER combo is more effective at saving people than an actual ER). I also like that her R can be counterproductive, so I don't just feel like a walking Ult Bot (see: Leona) past lane phase.
**Items: **
plus some combination of 
Wukong Top & Jungle
Why: He's still useful even if he falls behind in lane (that sweet sexy CC ulti <3 ) plus awesome juking potential with W. (I once got FB when the enemy Lee Sin turret dived me, then after I unloaded my combo, I cloaked and let him eat turret shots. I would've died had I not decoyed.) Wukong's VO is also pretty inspirational.
Items:
Top lane 
or 
Lux / Vel'Koz Mid (I don't play mid...)
Why: Lasers. Also, it's nice to be long-range.
Items: 
plus 6th (defensive) item.
For Vel'Koz, I'll sometimes build 
plus 6th item, typically 
Sivir or Tristana ADC (I'm a shit ADC)
Why: Because I own them, and can maybe perhaps ADC with them. Tristana was OP, and still has her Rocket Jump for repositioning. Sivir plays like a caster.
Items: Trist 
or 
then an 80 AD item (
