Quoted from Krupps4:I agree. I think a good rule of thumb is for your own enjoyment one hour a day. If you want, to be a real musician - three hours a day.
In my teens and through my 20s, that was me - hours a day, plus band practices and playing bars. That was my pre-pinball life, guitar. Period.
In my 30s, everyone got married, had kids, went in their own direction. I bought my first pin, then my second. Then my third. And on it went.
When I run into people I haven't seen in years, the first thing they ask is "You still play??" (while doing the prerequisite air guitar strum). When I tell them I haven't picked up a guitar in 20 years they're shocked.