Honestly, I don't understand you all. Apart from the fact my chest is pretty sensitive at the moment, I find my bra pretty comfy. It was always a weird feeling to have just one layer of fabric over my chest, anyway. I know, it's psychological, and I'm weird. :p
All that to say I don't miss it at all. The only thing I miss is swimming. But let's face it, it required removing my shirt, and it made me feel awful for that, anyway. So I can still wait. Five years without swimming; I can take a couple more!