Gig 601XL Builder writes:

But that aside the majority of the citizens of the US feel that the POTUS is
of significant enough importance to allow those who are charged with his
well being a certain latitude in his protection.

How do you know? None of the current procedures in effect was ever voted on
by the majority of citizens of the US; it's all Executive Orders and the like.
Some of the laws related to this look wildly unconstitutional.

While a individual or even
many individulas might have in the past or in the future suffer some
financial loss due to the steps required to protect the POTUS it pales in
comparison to the loss that would be suffered by many, many people should he
be killed, especially should that attack be part of a larger attack on our
country. The loss may well be caused by purely emotional reactions but that
doesn't make the loss any less.

A number of presidents have been killed in office and the country has not
disintegrated into chaos.

Bringing a city to a halt is, to say the least, a little overstated.

I wish it were.

As far as the limit to the POTUS's importance to the US, yes there is a
limit as there is a limit to what can be done to protect him. But, at least
at this point the general public doesn't think that limit has been exceeded.

The general public has never been consulted on the question.