It depends on when Bitcoin will reach $1 million and how old I will be by them, if it where to happens in a few years time and I have enough stash I will most likely not retire but I will choose the type of job that I will do, nothing stressful because I will be very rich. If it happens when I am older it will be early retirement for me and my lifestyle will depend on how big my stash will be. Somebody that is very rich doesn't necessarily need to retire completely, they can engage in soft work that won't be stressful for them, there is no point of being very rich and be over laboring yourself, except you have set a target of when you will retire.
Technically speaking it typically base on how many bitcoin I have been able to save up that will tell me if I’m to retire when the price get to $1M or not, and that’s also what you are pointing at. And the type of work which I’m doing will also contribute to if I will retire quick or not, if it’s the type of job than will not give me stress and i will also have time to attend to other things I won’t see reason to retire quick even if I have enough money unless I want to go and start up something for my self if not I can’t just leave work and seat at home because I have made enough money, as I will literally get bored.