I agree with Wingwing above.
On CARS TPMS is REQUIRED by law with run flat tires. Bikes don't come with run flat tires so there is no requirement.
Most flat tires occur while you are driving because the vehicle in front of you, or your front tire, will run over something laying flat on the road and stand it up so your tire, usual the rear tire, runs over it and you have a puncture. Most of the time it stays in the hole it just made and you now have a slow leak while you are still riding. If it comes out you have a fast leak now. With a normal tire the bike will usually let you know by the time you are 5 psi low or so. With a stiffer runflat you will be at a much lower pressure by the time the bike actually lets you know, on a flat straight freeway it might not let you know much at all.
Even if you check your air pressure every time right before you ride, it wont help you when a nail goes through your tire on the road. A good TPMS working properly will tell you during your ride if you are losing air and how fast you are losing it. If you run a runflat tire because of the safety aspect why wouldn't you run a TPMS for safety too? The bonus is it works on your non runflat front tire too.