How good is my bike?

The Sundance is an inexpensive line of Fuji hybrids. For a couple years our shop has bought a few pallets of these for our big clearance sales, but it's not something we usually put on the floor. With regular tune-ups that include brake and derailleur adjustment, bearing adjustment, lubrication, and wheel truing, plus a decent after-market saddle, yours should give you 5-10 years of casual service.

You can replace your seat. Bicycle seats are a personal preference type item, one size does not fit all. Most riders try out several before they find one that they like. Talk to your bicycle shop and see if they have a seat trial program, most do.

You can change your shifters to thumb shifters. They are easier to use and you will be able to get the geat that you want on the first try.

I'm not familiar with the Sundance, but like most bike manufacturers, Fuji has several different levels of quality on each model of bicycle. Since you got it through a rewards program at work, I would bet that it is the least expensive model and probably has the Shimano Tourney drivetrain. This is just one small step above Shimano's bottom of the bucket component group, the Shimano "No Name".

I would suggest that you take the bike to your local bike shop and ask them if the bike is the right size for you. If it is, ask them about upgrading the shifters and the seat. If it is not the right size, ask them what they have to offer and sell your Fuji on Craigs List or eBay.