At this point in your life (being almost 30), you should be able to properly look out for your best interests. Maturity comes from life experiences, and you have over a decade of experience since becoming an adult.

People in their teens and early 20s are still maturing (will most likely be done at 25-26) and aren’t as stable as someone closer to 30. Your BF isn’t able to control you (as well) as opposed to someone who is 20.

Yes there are couples with unequal income, but that doesn’t mean there’s a power imbalance. You’re not dependent on your BF for everything.