There's a lot of members out here who would help hold your bells and rare/desired items for you if you were to reset your town, so you don't have to worry about losing all of that. Though I'd recommend not transferring EVERYTHING over to your new town since that can ruin the fun a bit. You can also find people to hold on to your dreamies and hybrids as well.
I was in the same dilemma as you a month or so ago. All the fossils, full house, everything on main street unlocked, all of that. I reset, and I couldn't be happier. The truth of the matter is, you can earn it all back, and with the generous people on TBT and the ability to time travel (if you want to do that) you can very, very quickly earn back a lot of what you lost. I reset on July 3rd of this year, and it's the 17th and I only have two more fossils left in my museum, the T.I.Y., a fully upgraded house, and a town that I love.
If you're feeling very bored in your town, then resetting may be the best choice for you since it gives you such a fresh start with things. There's lots of people here who will help hold your items and get your upgrades back and what not.