Thru-axles make a lot of sense for disc forks; Both in the secure method of holding the wheel and cutting down on flex in suspension forks. They're also handy for mtb full suss designs, as they have a separate rear triangle, which can also get a bit flexy. This doesn't tend to be a problem with a regular double diamond bike frame.
The main con apart from compatibility, is slightly slower wheel removal.
Thru-axles make a lot of sense for disc forks; Both in the secure method of holding the wheel and cutting down on flex in suspension forks. They're also handy for mtb full suss designs, as they have a separate rear triangle, which can also get a bit flexy. This doesn't tend to be a problem with a regular double diamond bike frame.
The main con apart from compatibility, is slightly slower wheel removal.