I think it is quite likely we will join. However, it does affect some things (like our ability to work towards banishment of nuclear weapons*, and to be able to do diplomatic forays. Not that we have been that successful in those), and the decision to joining NATO is something that should have a very broad political support. We already do lots of trainings with NATO so our military is compatible, and we will start increasing our military budget..
The problem is if we do join, it will take some time before we are full members, and in the meantime we are vulnerable to further Russian aggressions.
* Would have been interesting to know how the situation had been if we had continued with our nuclear weapons program that we had in the 60s. We definitively have the capability to make such weapons, but the politicians decided to scrap it.