Earlier on I used to love soloing, but as my musicianship deepened and grew, I found myselrf tending to do less and less of it.
In part, I think reading an interview with Anthony Jackson set off a lightbulb for me, and what he spoke out against was essentially "gratuitous soloing". I more times than not will flat out refuse solos unles the music really, genuinely calls for a "bass solo". I've heard great bass solos that really made a song, and heard just as many that should've been left out altogether, either because of "wankery" or just plain disrupting the momentum of a piece of music or having little to nothing to do with the greater context.
Some would think my views odd considering that I play in a band that does nearly 100% improvised music. But here's the thing, soloing and improvising are NOT one and the same, and iI think some people are sadly unaware of the difference. What i LOVE doing is being part of an ever changing/morphing musical dialogue that grooves, swings and takes abrupt left turns @ Albuquerque and creates textures, improvising WITHOUT soloing, spontaneous creativity that helps pain the greater picture if you will.
The key over all is listening and digesting what's going on around you, interacting with it or pulling and pushing it somewhere else altogether.
But as for me, I will occasionally solo, but only when ABSOLUTELY necessary or called for.