Safe: takes time to drill, torch, jimmy, or haul away
Tasteful display cabinet: smash and grab in a jiff

Safe: easily maintained micro-environment, no UV, no dust
TDC: need some really good dust rabbets to keep out the smut; UV sees where you see

Safe: space-conserving square or rectangular footprint
TDC: everybody form up in one equal rank

Safe: inexpensive, doesn't have to be a Browning or Canon; 90% of what you get in a bigun available in a cuddly little thing from StackOn (Dick's Sporting Goods) you can move yourself on a fridge dolly
TDC: You won't be happy with pasteboard from KMart so it'll be worth more than what's in it and probably more cumbersome to move than a small safe.

Safe: Stick em in there muzzle down and avoid the mushy head; stick em in a sack and stuff in more, and more, and more, and more
TDC: Worry about stepping stone barrel lengths and attractive "groupings"

Safe: Kids never remember a combo
TDC: They'll search for the key

jack