I I don't think I can sing too great - but I know for a fact my singing is better than A LOT of bands out there who are getting critical acclaim, headlining venues and getting paid top dollar for their stuff.
There's a lot of bands, rock bands in particular, who don't have great singers at all - but seem to make up for the lack of vocal talent elsewhere, like their performances, energy, crowd participation, atmosphere, and musical talent of the band itself.
Besides - how many singers have you heard with AMAZING vocal talent - yet they still sound like vanilla cookie cutter fodder, no different to the next amazing vocalist? Most pop stars could be taken into that category.
I'm currently trying to adopt my own voice, while also focussing on technical quality.
Too many people try and sing like their favourite singer, they sound so boring, and weak. By doing that, you either don't make it, become a great cover vocalist, or Simon Cowell picks you as the next winner of Pop Idol.