I've never really driven a boat, but I was a sea cadet, and I've done a bit of canoeing.
And today I bought a boat. A little (ish) cabin cruiser. With money my parents have given me, on the condition I take them out in it occasionally. (It was pretty cheap in boat terms)
Dh thinks I've finally lost the plot, and that I will inevitably sink it on my first outing. 
Aibu to think it can't be THAT bloody difficult, given that hundreds of thousands of people manage it perfectly well?