I'm not going to sit here and tell you the G.E. wasn't convenient as hell, it would be a lie it was very nice to buy the randomest shit for quests and stuff at the click of my mouse. Also on the flipside, getting every last coin from my useless junk was also nice, BUT
The G.E. brings too many issues for me to vote it back in. It completely removes the reliance of player-player interactions, and that's bad. Although I won't say it was super fun to sit in a bank trying to sell something, it was necessary for players to rely on other players, to control prices in a true supply and demand nature, where not only supply and demand but TIME is factored in to the price. This keeps the price truer and the market more dynamic.
Also, with people worrying about every last coin, I feel that the G.E. was just another update that started the transformation of the RS community into the moneyhungry beast that it is today. Along with the removal of wilderness, the only way to show your dominance over other players was to have more wealth than them. It became a money fight, a skillcape fight, etc.......and it changed the community forever.
Players were only worried about acquiring as much wealth as they could and holding on to every last coin with a death grip. I won't attribute this all to the G.E. but it was certainly a determining factor in this change and I'd rather type my fingers to the bone to sell 3 kebabs, a bronze necklace, and 17 tiara molds than to see the G.E. added to the game again.