Why not do a clean/fresh install on a new HD to see how long it takes or whether you enjoy the experience? If you follow the guide on my blog post you might be surprised at how ‘easy’ it is?
I quite like having a bit of a spring clean tbh
All of my important stuff is backed up and any prog-specific settings are usually easy to put back on (or could be done by copying prefs files if need be - but I tend to prefer a clean-as-possible install).
Haven’t had time to read it yet… but this looks interesting: