...Big Shoe and some of the others here on the glued rubber sole savers, toppys, what have you.
I've worn dress shoes daily for over 40 years. I used to get full resoles, half soles, etc. It seems like I was forever in the cobbler's shop. Many years ago I got on the sole saver track. I put them on new shoes and replace them when the heels get too "round." I have never worn out a pair of shoes since I started this.
I have 20+ year old shoes where I've lost count of the times I've changed the rubber sole savers and heels. I'm often complimented on how nice my shoes look, and people ask me if they are new.
If you like slick soles, fine. If you want to keep your shoes for good, have some sole savers glued on the next time you buy a new pair or have a full resole job. If you use good polish to keep the leather supple, you will get tired of a pair before you ever wear them out.