Many people seem to think that I'm against the existence of suffering solely on the grounds that it is a negative phenomenon, and that I'm promoting a futuristic utopia of nothing but unfeeling robots in its place. To extinguish this false notion, I'd like to present two sets of negative sensations -- one acceptable and the other not so acceptable.
Please note that these sets are somewhat subjective; the real solution would entail that each consciousness immerse itself within a simulation perfectly customized to its particular preferences -- at least, so long as said preferences do not interfere with the fundamental teachings and meta-teachings of the society, in case the consciousnesses ever need to leave their respective simulations.
Suicidality and extreme depression
Pain caused by cancers and other deadly diseases
Nausea and any intensely uncomfortable stomach sensations
Passing kidney stones
Scrapes and bruises
Pulled muscles (excluding some back muscles, anyway)
Headaches (possibly excluding migraines)
Cold and hot (excluding extreme burns, frostbite, etc.)
The latter set wouldn't really make the world such a horrible place, honestly. If that's all that our children had to look forward to, then I don't think that your having children would be that big of a deal, even in spite of the fundamental nature of deprivation as a cause of discomfort. Too bad for you -- and me -- that these are definitely not the only possibilities, and that set 1 must also be accounted for.