Been casually at it since 2009. Got my start with mixcraft and fl till I moved on to Reason in 2011.
Learned 14 types of synthesis by heart, all major/minor scales are etched into my muscles and can use pretty much any daw I can think of by default based off of my Reason knowledge alone.
Learned some methods to find any chord I can possibly think of and have taken many breaks in between to play some very basic piano riffs xD
Became adept at Control voltages a few years back as well, which took some time to get used to but in general there are only 2 types of CV wires to use in Reason period.
I spend alot of time noodling around for ideas and whatnot while practicing my scales every now and then.
Learned to read sheet during my breaks from producing.
[Summary] I want to get good at an instrument (that is not percussion related) as I have most of my bases covered already.