I'm 50 years old and I, too, am a bikeaholic. I met my wife when we both worked in a bike shop, so she HAS to tolerate my habit! She's a racer and rides about the same size frame as I do, so part of the collection is hers.
Complete bikes:
Road
78ish Stan Pike 81 Trek 950 84 Trek 720 85 Trek 770 85 Raleigh Team USA 87ish Falcon 89 Eddy Merckx Grand Prix 93ish Serotta Colorado 98 Litespeed Catalyst 98 Independent Fabrication Crown Jewel 99 Connondale R2000 99 Ryffranck 00 Pinarello Prince old non-Fred Kelly Alpine as a fixed-gear
Mountain
89 Bridgestone MB2 97 Connondale F1000 98 Klein Mantra 99 Airborne Lucky Strike
In progress:
74 Raleigh Super Tourer 84 Trek 760
Frames:
74 Witcomb 88ish De Rosa 90 Eddy Merckx 10th Aniversary CID Touring (unknown vintage) Kabuki/Bridgestone track Nishiki TT
Odd Stuff:
Performance errand bike
Diamond Back Formula One
Mosh Skooled Free Style
Hutch Pro Star BMX