Nitrogen also maintains it's pressure longer, and doesn't increase in pressure at the same rate as compressed air.
Whatever your thoughts, for $3/ motorcycle tyre, and free top-ups for the life of the tyre, it's something I've been willing to do on all of my vehicles since Bob Jane first released it as an option.
It increases in pressure half or less than a tyre filled with compressed air, and it maintains pressure something like 40% longer.
And, $3 is like 2% of the cost of the tyre (front) or 1.25% of the cost of the rear tyre - and even if it's just a placebo effect, the fact that my tyres maintain pressure longer means I'll probably save several times that $3 in fuel savings due to having correctly inflated tyres..
Each to their own, but I use it, and have done for over 11 years.
Cheers,
Rick