The argument that proves my point. "Tampa has no history" (they are not a good team) Blah blah blah. "New York has a history" (they have won something) Blah Blah Blah
You CLAIM to love your team, but lets see what arguments you use to move away.
1. going to college: When most students go to college, they have a local address and a permanent address. That means, for the 3+ months that college is not in session, the student does not live in the college town. They have two residences, and have not really moved. I am not talking about these people, IF they return after they finish their degree.
2. job replacement: I suppose every job is NY is filled and no new job will ever open again. I never knew that. : Otherwise, someone who loved a team could find another job to stay with his beloved city.
3. weather: LMFAO This is priceless. "I love my team, but it is too cold." Some love.
If you love a team, you find a way to stay. When you love something, you are willing to make sacrifices for it. If you are not willing to make sacrifices for it, you do not really love it. So, you take up the new team in the new town.
What are you going to tell your children/grandchildren when they want to go to a baseball game? "Grandpa (Dad) loves the Mets, so he won't take you to a local game, except once every 4 or 5 years for interleague play." Or maybe, "Grandpa (Dad) loves the Mets, but he can't take you to see them play, because he doesn't like the weather in NY". How about "Grandpa (Dad) loves the Mets, but will take you to see a team he doesn't like and you shouldn't either."
The bottom line is if you want to keep the support, keep the location as well.