...then why are people willing to spend money on certain things, although they don't want to spend time on them?
I know people who are paying members at a gym, but they never find time to actually work out. Yet they refuse to quit their contract - and admit doing nothing for their physical health. Being honest about it doesn't change the situation, but it saves you a lot of money. And it frees your mind from bad conscience.
This self-acceptance is part of the minimalist lifestyle. It enriches us, not only with regard to our bank account. We know what's ranked high on our priority list and we're capable of doing. On the flipside we know what's beyond our capacities. And this gives us a boost of energy for all other activities.
Yes, time is money. But only for minimalists.