I can tell you my experience which would be greatly different to most.
I started guitar lessons when I was 10....lessons is a bit of overkill, I had a few lessons, forgot to go to many, then quit in shame.
My cheap acoustic guitar with nylon strings got a little bit of use through my teenage years, mainly plucking notes along to my favourite songs with little accuracy, but I didn't care, I was a rockstar! That was until my mother, walking into my filthy state of a room, accidentally stepped on the neck of that guitar and snapped it in half. I reassured her it didn't care but secretly I was devastated.
It wasn't until I was in my 30's I went and bought a cheap electric fender clone and amp. I tried to learn again via youtube, and a program called guitar pro, basically a guitar tab program. Unfortunately I found that difficult to follow, and again, my guitar gathered dust in the corner.
A few more years past and a saw a review on an console game called rocksmith. This changed my guitaring life. Games I can understand, and a simple interface made me comfortable picking up the guitar again. I'm now in my 40's and at this point I would call myself an very amateur player. But one thing it's made me is a consistent player. Instead of chucking the guitar in the corner for a year, I find myself playing most days, at very least pining to. Being able to jump straight in and play the songs you really want to play at your own pace is a great advantage over other learning aides.
I'm hoping to upgrade my guitar to a half decent one this year, the cheap fender guitar i still have is bloody horrible. Too much string action, very noticeable fret buzz, and just really difficult to get a smooth sound out of.
My only advice to those who may want to try the rocksmith route is to combine it with some lessons with a professional, particularly at the beginning. I have no doubt I have picked up and nurtured some horrendous habits sitting on a couch in front of a big screen.