How much is it worth?

So there is talk of her joining the gym, I'm totally kool like that.
Really. I think it's long overdue and it's definitely something that
will benefit her, the kids, and our relationship. I'm having a real hard
time with the cost though... it's over $500. I just have this sneakin
suspicion that it will last for a few weeks or even a few months and
then it's going to start with the excuses... I'm too tired tonight, I
don't wanna go alone, I have a headache, my back hurts, I don't feel
good, I'm too sore, the list could go on for days. This is my concern.
I have no problem dropping that kinda cash for something that will be
useful and beneficial to everyone. It's only the determination that
concerns me. How long will this last? My hope is that it will continue
for years... maybe forever... I know that I'm just dreaming here but
wouldn't that be something?
Don't think that I am trying to put on a curse here, I'm just stating my
concerns.

I'm out.