Looking at retiring, central Missouri in particular. Seeing several nice houses but only 10 acres. All wooded and surrounded by more wooded land. How much land is "enough" I know, more is better..
Do you want to hunt off of your back porch, garden, or keep neighbors at arms length?
Some people are blessed to have a national forest or cemetery joining. Others end up with a trailer park or poacher moves in next door.
It all depends. Ten acres is plenty to mow garden and do a lot on.
