For me, it depends on the gig and the personalities of the people Im working with. I get hired because people want me to help make them sound good (especially the vocalists)....Unless its my band, its usually never about me and what I want ( being a studio/session veteran went a long way to this)....its more than just serving the song: its trying to make everyone else sound good.
However, I freely admit there are times when I despise this mantra, and its mainly with guitarists that believe the entire musical universe revolves around the guitar.
I remember a blues jam I was hosting a few years back and we played four 12-bar I-IV-V shuffles in a row at roughly the same BPM. On break to switch players, the guitarists and harp player were all standing around complementing each other on the different things they did. The drummer turned to me while walking to the bar andsaid "I dont know about you but I felt like I played the same song for 20 minutes". I not only laughed but it was a little more profound than that: I felt like I SAID the same thing for 20 minutes.
Its for this reason I really do enjoy both fronting/singing and playing bass in my own group as I have way more flexibility as a player and what I want to play (including song selection and soloing). I was told many years ago that if I ever wanted to do what I want in a band that I need to sing -- best advice I ever got!

YMMV
Edit: It should be noted that in our day and age, folks that go see live music want to have fun andbe entertained (including call and response portions and sing-along portions -- this is the interactive age, after all). Depending on the type of band and club, they want to dance and drink -- Its now not just about music but the larger umbrella of "Entertainment". There
is a subset that are interested seeing people play their instruments, they want to
see that and be
entertained by that: People playing their instruments --- Flashy guitar solos with 80s style fretboard gymnastics, slap bass, drum breaks, sax wailing, analog keyboard shredding -- all the usual cliches go over very BIG in a live setting. Too many folks (especially guitarists) are stuck in the older paradigms ( yay, another Strat-In-A-Hat playing SRV covers). YMMV and all dat