What's NOT wrong is . . . . if you check your tires once a month, or twice a month or once a week, at least you will know exactly what your pressures are . . . . that day - That's much better than most of the driving public, so you're slightly ahead of the game
But, with some tires now costing upwards of $200 per corner it would be very nice to know when you've picked up a nail that's now causing a slow leak . . . . before you've driven far enough on the low tire to destroy it's structure. *If* you discover that low tire during one of your weekly/monthly tire pressure checks, of course you immediately air it up and go looking for someone to patch the leak. *If* they dismount the tire from the wheel to do a proper repair from the inside, a quick inspection will tell them if you've already destroyed the tire or not . . . . but many places will just offer you the quick $15 tire plug repair, air it up and send you on your way. When the tire comes apart without any warning a month or so later, *maybe* you'll be able to keep it right side up and on the road and all you'll need is a tow back to the tire shop and a new tire
The other downside is, very few of us actually religiously keep to our own schedule of monthly/weekly tire pressure checks, even though we know how important they are, so our odds of catching the slow leak before it ruins a $200 tire are even slimmer than they might appear
What's really *nice* it to get behind the wheel, flick a switch on the steering wheel and see an actual readout of the pressure in all 4 tires before we even start the car. Instead of a 'couple minutes of easy work' once a month, it's 5 seconds of no work at all every time you start the car. There's nothing safer than that and the cost is less than replacing one tire. If your car's system isn't that elaborate, at least knowing all 4 tires have enough air in them to keep the warning light from coming on is the next best thing - I still do my manual checks about once a month to replace the pound or two that usually leaks away every month . . . . but that low tire light NOT flashing on the dash is also VERY reassuring, at least it is to me
Don