There are several reasons.
2. Target Shooting
3. Good barter and trade value if the SHTF
4. Also use for obtaining food anytime
5. Quieter Round regarding detection *Especially with Suppressors
6. Value and ease of storage in quantity
The Constitution is not an instrument for the Government to restrain the people. It is an instrument for the people to restrain the Government!
If the Freedom of Speech is taken away then dumb & silent, we may be led like sheep to the slaughter!