I have owned a tub for 6 years and still use mine multiple times a week. My tub is outside in the backyard. The only exception is winter nights when it is windy. Cold isn't a problem....it's the cold when it is windy.
My wife doesn't use it very often due to time, it being outside, tiredness...etc. More so in the summer.
My son rarely uses it because it is too hot for him and my daughter uses it occasionally so I am the only one that uses it regularly. I am fine with that.....it is nice to stretch out and use any seat. Everyone else is fine with that too.... they can use it IF they want, or not.
I think how much a person uses a tub is directly related to how committed that person is and that directly relates to how much enjoyment you get out it. It depends on the individual.
Jac-470 You have a nice tub and I am sure you will enjoy it.