You are experiencing what nearly every bicyclist experiences as some point or another: upgradeitis.
It usually manifests as a desire to change something that is perfectly serviceable because...well, because! Some of us have it so bad that we can change everything on a bike 4 times over and end up with a bike that has none of the original parts left over. There should probably be a 12 step program for that but it probably wouldn't go well:
"Hello. My name is Stuart. I ride bicycles."
"Hello, Stuart."
"I've upgraded my orange Stumpjumper M2 Pro to a white Stumpjumper M4 Pro to a disc red Rockhopper to a titanium Dean. I've changed out the wheels, cranks, headset, shock..."
"What shock?"
"A sweet Fox RLC."
"What wheels?"
"A super nice set of Phil Wood disc hubs, DT Alpine III spokes and Velocity Aeroheats."
"Cool!"
"Yea and it has a Chris King headset, Dean seatpost, Dean handlebar stem, Thomson handlebars, Paul brake levers and..."
By this time the rest of the group would be drooling and whipping out their credit cards to go buy some sweet bicycle swag. It wouldn't end well.
My advice is to freeze your credit card in a large block of ice, ride your bike for a while, get used to it and wait until something actually breaks before you start upgrading. Trust me, your life will be simpler
