It was alright in my twenties. Built a career, made a ton of money before the IR35 reform, but you sort of felt like everyone had an expiration date, was there to build a career and then move away. It's not that interesting outside of zone 1, it's the same high street full of Prêts/Nerro/Itsu (If you're lucky) or Paddy Power/Chicken shop/charity shop, and rows of small, drafty and moldy terraced houses.
I wouldn't live there, but Paris is infinitely more charming, and keep getting more pleasant as they remove the cars from the city. It's a place that feels lived in, that encourages and rewards you for wandering.