I never forget my phone, but I do forget or lose my wallet on occasion. As my wife would attest, I am bad at leaving my wallet in my pants. Having my wallet connected to my phone helps solve that problem. Also I have already been scaling down what I carry. I rarely carry cash and the only cards I have to have on me are my driver license, CC, and ATM card. My insurance cards are digital, I only carry my corporate CC when traveling for business, and there is nothing else I need for daily use.
I did try wallet cases in the past, but I did not like the bulk they added. I like that this wallet can be removed when I am home.