What does "experimental" mean, here? It apparently just means that they're not yet fully FDA-approved, since all the vaccines being used have emergency use authorizations because they've gone through the same clinical trials that other vaccines have gone through. Both Pfizer and Moderna have applied for full FDA approval and will likely have that approval by this fall, so hopefully that will calm some of your fears.
At any rate, the stuff about moving to Canada because of vaccine requirements makes no sense. Nobody is talking about making the vaccine mandatory for everybody, they're just talking about potentially having the same kind of vaccine requirements we have for other diseases. You'd think people who want to put COVID behind us would be excited about getting to a place where it's not a problem anymore, but alas. And, once again, having the right not do something doesn't make not doing it a good choice, and doesn't prevent you from having negative consequences.
I did look up what happened with the development of the polio vaccine, since you mentioned it. Salk announced that he had a vaccine that worked in 1953, clinical trials began in 1954, and a mass vaccination campaign began in 1955. Some hiccups, which were much worse than anything that's happened with COVID vaccines, occurred. But there's always going to be a period, for every vaccine, when it's new. That period is probably also going to be during the period when the disease is still spreading widely and the vaccine is most needed. What would happen if, during the period when the disease is still spreading, people just decided they couldn't trust a vaccine until it had been used for years? If you think about it, the success of vaccination campaigns depends on people taking vaccines when they're relatively new.