You're 100% correct - changes to the constitution can happen (and have happened). It's not beside the point because any additional controls have to be weighed in the context of the 2nd amendment (as it is written and interpreted today).
The United States has more individual freedoms than most (if not all) countries. The downside of those freedoms is when individuals use their free will for evil purposes.
The United States has more individual freedoms than most (if not all) countries. The downside of those freedoms is when individuals use their free will for evil purposes.