I had a 70 rogue on Gul'dan with 1k gold and already had his epic mount pre-bc; this was more than all my other 60s and misc alts combined, and my only epic mount period. I did indeed abandon it eventually, then awhile later BC came out, tried to pick it back up but couldn't get into the server it was on. Abandoned once again, lvl'd my hunter and druid to 70 in that order...so yeah, I abandoned my only well-off char in favor of chars with friends pretty much.

(Though a few months later when my ex started playing again, she had a lock on gul'dan with my rogue; we both transferred the chars to mag and lvl'd them to 70 together lol)