Depends what call a solo. A guitar or bass 'solo' while the rest of the band are still playing I like. A true solo where it's just the one instrument showing off (not just a break down where one or two instruments hold the groove) is terrible.
I once left a Whitesnake concert half way through as for no reason there was a five minute guitar solo (no one else playing, not even part of a song), then a five minute bass solo, then the drums, I couldn't take and left.
I was already annoyed as Black Label Society were support, the main reason I went, and they pulled out at the last minute. The solo's were the final straw.
So what do I feel audiences want? No bloody solo's.