I built 29" wheels for my full rigid gravel/mtb (carbon frame), and 29" wheels are fucking stupid. They're too big, there's not enough maneuvreability and when you turn the handlebars the wheel is so big it threatens to clash with your own legs.

I am 5'11" and 27.5" wheels would have been better. It's ridiculous that there are people shorter than me who have 29" wheels. To be honest 29" wheels look goofy from afar too.