For me, it was not about the destination near as much as the journey.
I have 38 months and about 2500 hours in a frame-off. There were certainly times, (as I figure most all of us here have had), when you see the progress, and then see how much more there is to go, and think 'I'm never gonna get done with this'....but we trudge on.
I'm with coilover….I don't hunt, fish, golf, etc.....I work all the time. But as much as I enjoyed, and still do enjoy, working on vehicles I would not want to do it for a living.
TUTS 59 is correct also.....it IS therapy.
(My two cents.....and a cent and a half of 52Carl's)