People make their decision what faction to play and what realm to play on for the same kinds of personal reasons you made your decision on.
Said no one ever.
Absolutely no one predicted that transfers would be opened and then made faction-specific and stopped in the process of moving entire guilds.
I predicted that faction-specific transfers would not work to balance factions at this point. The time to deal with the faction balance issue was before classic was released. That’s the only time people would have been okay with restrictions. It could have worked, but no one in the Blizzard Department of Unforseen Circumstances™ was on the job in the past 5 years.
I had no idea they were going to screw it up this badly. No one did.