I paid for it all myself...and despite having a commercial license I have no wish to operate the gear and flaps on a Boeing at 05:00 on a sunday morning...other than maybe once or twice for a laugh. I did think about doing a 737 TR just for fun though, as I reckon it'd be a good challenge.
I fly for fun, but really my main goal is to prepare me for when I can afford my own Embraer Phenom...
(we can all dream can't we? 
)