Something about doing it outside is fun.
Of course, sitting inside in front of the computer or TV is easier, 'cause that's where most of the porn is.
That used to be where
all of the porn was, until the invention of the blessed mp3 player with video screens!
Now I can recline in the sun and watch porn on a 1-1/2" screen! Gotta love it.
It's just a damn shame that these things came about right around the time my eyesight started going south, though.