You know you're lacking skills, what makes you think you can mooch off a much more popular artist
Friendship and sunk cost, I guess.
At the start is even said that he has been part of the band since the start 10 years prior to that day. And also the most realistic and irrealistic part is the drummer getting sacked, getting a drummer (not even an excelent 1 of a kind talent, just an average drummer that keeps time) is hard as hell, its way more expensive and hard to start as a drummer than play another instrument. In reality most drummers are kinda average, with the amazing ones being the exception.
TL;DR; Bassist Look Too Bored - CollegeHumor/Dropout (1:21 - 1:48)