The look, touch, scent, durability and the wide and pleasant support that ain't sliding nowhere like nylon or whatnot. Picture vs 1,000 words hoopla: In the 3.3k strong Facebook group "The Taylor GS Mini Appreciation Group" you can search "strap is the Honey Gold color" [June 25, 2020] to see this Honey version worn on a lighter shaded Hog and another Honey lying atop of a darker Hog, and the Chocolate strap atop the Spruce top. Anyway.
To me it's about perspective. A pair of meh (nice if on a big discount) quality leather shoes lasting a couple years at most is used daily or this gem that will outlive you if you treat it like you're hopefully already treating your guitar.