Well, you said you are using it since forever, then i guess there is some point ;] Then also there's superior filtering algorithm, no fuss environment mapping, dome mode, correct handling of displacement maps, better RAM usage analysis and most recently - potential memory savings. Yes, it has some limitations and weaknesses, but it has some strong points too. I personally don't use it because of less convenience compared to Max bitmap and because of some other limitations, mentioned by Juraj and arqrenderz. It would be nice to see if Corona bitmap could get more love from devs, but i think it's time for me to give it a chance anyway.