The public transportation network here in Stockholm is good, but wouldn't even consider cramming myself into a packed subway train or bus. Even at this time of the year when it's -5 degrees celcius and snowy I really enjoy my daily rides.
It cuts commuting time in half and I shave off another two hours of sitting without moving a day.
If possible, I highly recommend bike commuting. Get a good bike (with gears) and rack mounts for bags. Gravel/adventure bikes are fun to ride and work well on all surfaces. Supple 650b tyres are all the rage these days. They will give you plenty of comfort while sacrificing very little when it comes to performance[1].
Tomorrow I'll be going to the outskirts of town with work. Then it's 50 km. I already look forward to that workday adventure. :)
[1] https://janheine.wordpress.com/2018/01/03/12-myths-in-cyclin...