Your thoughts are appreciated and understood. I make 2 points, first, the cost of a new TPMS system also requires the install six sensors. This means removing and dismounting six tires, then remounting and installing back on your vehicle. I also carry spare valve cores should one decide to leak.
Second, I do carry a spare tire if the need to replace a non repairable tire should ever come to pass, but I am fully capable with repairing a flat tire while on the road with minimal down time.
Likewise, checking coolant and oil levels prior to a trip is standard practice.
I can appreciate having a dependable TPMS system in place would be of benefit if already installed, but given my lifetime of experience and my ability to deal with a possible flat tire, I will opt to forgo the labor and expense of installing a new TPMS system.
Cheers