keep in mind the band isn't going to amount to anything if everyone isnt 100% devoted. My band has gone through 5 bassists and 2 drummers, right now we're ok. Remeber you can always replace a bassist or a singer, but solid drummers are hard to find, especially if you write originals. Everybody has to have good chemistry as well. You are ALWAYS friends before bandmates; it shouldnt be a chore for anyone...