[ipaddr]

You decided already by saying you have been cheated. Now you are looking for reasons.

Let's say you felt neutral. If you want to stay a programmer and make more long term changing stacks now will give you the same pay less responsibility (more time to learn the new framework) and put you in a better position. If you want management stay where you are.

Based on why you started looking you should switch the next time this comes up. Switching stacks is harder the further you go, don't let this gift drift away.