I started with guitar at the tender age of grade 3 (so i think 7 or 8 yrs old).  Obviously learned bass guitar because of regular guitar, taught myself enough keyboard to write music over the last couple of years, and most recently got an electric drumkit (cause i make S*** beats and need to learn more). 

Like Xilent said: Drummers are no musicians...i heard this every day hahahahaha...but always keep in mind:

A good band with a bad drummer will always sound whack, but a bad band with an awesome drummer can sound good!

In regard to this, I think drums are absolutely key to music. It's not an instrument in my mind, its like the feels projector, making sure everyone knows how much energy your tune has.