Ok, I've been playing the bass for just over two years and as of yet I have only played with another musician once (guitarist in an audition/jam). Is this too long a period to have not started playing with other musicians? I'm starting to feel confident with physical side of playing but not with theory. Another problem is that people will probably ask "What have you been doing for all that time, sitting on your arse?" In which case I would have to answer "Yes" because that's basically what I've been doing. Plus I don't know anyone who plays an instrument. How long was it until you got into a band situation?
I've seen and heard guys who didn't get into a band for years after starting, like in the Dozen plus range of years. Whenever you want, and whenever it becomes convient. Me? I was in a band after only playing for about a month. I've been in about 8 bands (including the one I'm in now (long story)) since then. Then only being about 2 years ago. It's all just relative.
Cam - Don't measure yourself by our situations. In the 8th grade, I only had my first electric instrument a few months before we were playing parties and battles of the bands. But few people had electrics then and growing up in a major US city is probably very much different than growing up in S. Australia today. Have you put up ads at music stores and www.themode.com ? I've seen some ads from "seeking bassist" ads from Oz there.
I've been playing for nearly two and a half years now, and I joined a band after six months. The band in question were all excellent musicians and the addition of a bass player who barely knew his own fretboard created tension at first but for the next year or so my technique came on in leaps and bounds. The problem I had with joining an established band was writing my parts when it came to new songs, because I pretty much can't. I'd have to say that being a reliable player is the most important thing, followed by creative ability and then technical ability.
I can't comment on whether 2 1/2 years is too long but what I can say is until you do get into a band, or any situation where your interacting with other musicians, you'll be limited as to how much you can improve as a bass player. Maybe, since you asked the question, it's time you did get into a band.
Only you know the answer to that question. I have always played with people in a performance situation. I learned to play drums by watching my brother in church, and when he left the church, without ever having played drums, I started playing in the ensemble. I learned bass watching my best friend play bass in the same ensemble, and when he wasn't there one night, I picked up the bass and played it in his absence, and all I had done was mess around with root 5 stuff once in a rehearsal before that. When he quit coming a few months later, I made the permanent switch to bass. At 15, me and 2 other friends started our own band, outside of the church ensemble. I had been playing bass for about 2 years at that point, but those 2 years were in a band like situation. I know that practice is valuable, and I don't do it often enough, but I crave playing with other musicians in front of an audience. If I couldn't do that, I wouldn't still be playing after 20+ years.