Time - money can pay for outsourcing things to buy you time. Cleaner, nanny, contractors etc. It can afford you flexibility in hours and patterns of work.
Health - again, from affording clean,safe ,stable housing rather than an overcrowded,damp and mouldy flat. Affording to have the heating when needed. Affording good , healthy food. Affording gym,holidays , hobbies that improve your mental health. And of course, affording better treatments, being seen on time, treating the cause rather than plastering over symptoms, preventative care etc.
Friends - it’s hard to maintain friendships (especially in groups) if you’re the only one that can only do walk in the park with a packup. Or the one that always suggests the cheaper/free options. Or the one that can never join in with an event, or offer practical help or do a nice gesture, or have the bill subsidised. Or the one that never has time to meet up because they can’t afford childcare or because they work all the hours under the sun to make ends meet.It can work for a while , but it’s never sustainable long term.
Again, you must be at least comfortable to not realise how much money can actually make a difference to all of those things and how many things we take for granted.