I lived there ten years. Most of that time I lived in 'metropolitan' Anchorage. Two years were spent in a 'bush' village. My entire experience was memorable though some of my memories as a fairly long term resident are negative.
As a tourist destination, Alaska is super. The costs of lodging and such are very reasonable in Anchorage and Fairbanks, but if you go to the 'wilderness' costs can rise exponentially. And, speaking of wilderness, even if heading out from Anchorage, wild scenes and settings are just a short drive away. Wildlife is readily visible, outdoor activities many and breath taking beauty is around every curve in the road.
The negatives to a resident are just personal. Though I loved the looong summer days, I grew weary of the long, dark winters. I also missed family as no one followed us up there and our kids began heading to the lower forty eight as they left the nest.