Fair arguments. I still fall back on a few simple facts.
First, gun laws only impact law abiding citizens. The "bad guys" don't obey the laws. MS13 and other gang members/career criminals will still have their weapons. The only difference is that fewer people will be able to protect themselves.
Second, I don't trust our government/politicians. While the idea of creating a safer place for everyone is nice, I don't have faith in the abilities of those in power to create fair laws or enforce those laws fairly.
Third and perhaps most importantly I don't believe we have a gun problem here in the US. The overwhelming majority of gun deaths are either suicide (if someone wants to kill themselves they will find another way) or gang violence, where the perpetrators are using illegal weapons and would not be following any rule of law anyway.