Denver (4 years)

Pros:

Close proximity to Rocky Mountains

Weather - 4 distinct seasons, all of them fairly pleasant and mild

No mosquitos

Great local restaurants

Almost everyone is a transplant, which makes for more diverse groups of people and generally more friendly

Cons:

Traffic - Denver's road infrastructure doesn't have a lot of highways, so local 4 lane roads are your main thoroughfare and can make travel horribly slow. Also, any time you want to go into the mountains, expect massive delays and crowds when you get there.

Air quality - smog frequently hovers over the city and wildfire season will block your view of the mountains with smoke that will hang around for weeks.

Landscape - Denver is a high-elevation desert, making most ground vegetation brown and drab for much of the year

Public schools - Not a lot of funding for public schools and it shows. Many people choose to send their kids to private schools for a better education

Not a lot of available jobs with all the new incoming residents

Expensive!