You have me seven but only five (that were really the same thing not separate things) were legitimate.
I support the USPS and dislike the private shipping companies
That’s a good reason. I assume, since this is surely true, that you already knew of the troubles at USPS and have already been giving to them freely of your own, unaffected by any other input, choice.
my grandfather was a mailman for 50 years
That would be a good reason too. Again, assuming this is true, you already knew the plight of USPS and have been giving charitably to them long before John brought it up, right?
Right so, since both of these reasons are bullshit and you haven’t been giving two shits about the USPS until today, let’s examine the legitimate reasons.
These are the real reasons for your decision. Let me conjugate for you why this is such a problem: