Be very, very afraid
The first 18 years of my life, all I needed was a Rem 870 and 700. Sure, I had the A-5 my grandpa gave me, and the muzzleloader, but they never got used. When I turned 18, I decided that, hey, I can buy guns now. Long story somewhat shorter:
1. I want a 1911
2. 1911 gets expensive to shoot, so I need a .22/45
3. Pistols are fun, but I need a rifle too. SKS finds it way into my gun cabinet (first of many impluse buys)
4. Yugo Mausers go on sale. Done deal.
5. Next week, 91/30s went on sale. Done deal.
6. I had an extra 870 I won at a DU banquet. Decided to sell it to buy a 10/22. End up trading it for a 10/22, Jap Arisaka, and Lee-Enfield MK4 No1
Thats been my last 4 months. I made way too much money as a high school co-op
Edited: The downside is buying a different caliber for each gun. I also have hundreds of dollars tied up into thousands of .22, 600 .45, 800 8mm, 400 7.62x54, who knows how much 7.62x39, some .303
Again, thats the last 4 months. Be careful.