to be fair in that setup you could probably do just 2 healers, as that's how many healers are usually actually doing something in CT, and that's 24 man.
As to the topic discussion, more people != more fun, Ill cite waiting 4 hours to fill a 40 man raid in WoW, only to have wiped on the first boss because one (yes one) person screwed up, causing the raid to disperse.
"Your opinion differs from mine, therefore you should quit playing"
Sure thing pal.