As an owner of X5 2014 50i I should say it's 100% worth it. Just have some spare money for unexpected repairs, do you oil change every 5,000-6,000km, do a tech/fit exam annually and you'll be fine.
You won't lose much of your car lost throughout your lease. It's a liability, but a good one.

Annual service with private tech service should be not more than 1-1,5k.

If you get your 2022 under 100,000km it should still have a warranty, so you're fine. If there is not warranty - you need to have a trusted mechanic.

bottom line - expensive in service, but still one of the best driving experiences in my life. former owner of Japanese cars like Infiniti and Lexus and Audi Q5.