There is a whole gaggle of bikes I totally regretted selling. But, if I did not offload them into willing, new owners' hands... I would not own the wonderful bikes I have today:
1997 Cannondale F2000 Volvo Team Issue:
2009 Cannondale Bad Boy Ultra:
2017 Santa Cruz Hightower CC XE:
2009 Seven Verve Titanium Singlespeed:
Don't hoard, with N+1. Just get exactly the bikes you always wanted.... and ride 'em regularly.