If I could fit my big feet into clips easily with tennis shoes I might be for the "go out and hop on" rationale. But I can't. I absolutely hated getting my shoes into clips/straps. So I needed 'special' cycling shoes anyway. I tried SPD-SLs when they first came out (still kinda late) and never looked back. I do have a set of nice walkable SPD sandals/pedals for the IGH bike, and I use them on vacation as well so I can ride and walk around destinations with my daughter.

But road rides at home/centuries away - SPD-SL all the way. Geared rides, fixed gear, old bikes, new bikes.
[But I do keep the original pedals for C&V authenticity]