It certainly buys you peace of mind.
I've recently moved home and I'm in disbelief at how much contentment I get from being outside in my garden, something I couldn't previously afford.
It gives you the financial security to choose the family size you want rather than the number of kids you can afford although I appreciate there are other factors in this.
It takes away that gnawing anxiety that something big/unaffordable could happen and topple the little balance you have - hello £3k leaking roof!
It gives you available funds to pursue your hobbies and interests.
It gives you a cushion to allow you to take risks in your career.
To me though the biggest one is the impact your home has on your mental health a cramped, leaking, noisy, gardenless box with no nice view vs a three bed semi with a sea view. I'm not wording myself very well with the last one but yeah being skint impacts everything and it's really hard to stop yourself getting dragged down by it all.
I never mind that money gets you better cars, clothes, gadgets etc but i rage at how much it gets you better education, better opportunities, better healthcare and easier access to the natural world.