I have a 2000 civic si and tbh, it's good enough for me. But I gotta change the water pump, timing belt, suspension, brakes, & clutch within the next couple of years. I'd rather just upgrade now instead of putting all that money into an older car.
Actually, upon reading this ...
How's that 2000 Civic underneath - how's the body holding up?
If it's not rusting, just organize to put the car in the shop for a week and get the timing belt and water pump done (at the same time) and get the brakes and suspension done. Deal with the clutch when the time comes.
That model year was the last one with proper double wishbone suspension front and rear. There are those who would consider that to be the last "good" model year for the Civic and I can't really say I disagree.
There are A TON of aftermarket parts available with regards to suspension and brakes on those. Even if you don't want aftermarket ... it means you should be able to get take-off OEM parts cheaply from someone who has installed aftermarket on their own car.
On the other hand, if it's turning into a rustbucket underneath, it's probably not worth fixing. Corrosion protection has not been a strong point of Honda cars over the years. I'm not entirely convinced that the new models are any better in the long term.