If you don't like Motorhead or the idea of a 63 year old man still being a reprobate then it won't appeal but if you like even one Motorhead track then it is worth your time.
I didn't find out anything that I didn't already know and there was far too much Metallica in the film for my liking.
Lemmy did make a nice little aside about a few people in rock circles having to go through therapy whilst he just gets on with things.
Despite his legendary persona and abrupt answers he comes across just as you hoped he would. Down to earth with no ego and just doing the only thing he is good at. When he showed us the difference between most peoples bass playing and his I was beaming. Poor old Henry Rollins looks positively domesticated compared to Lemmy. Erudite for sure but next to Lemmy he just doesn't have that magnetism.