That’s the kind of thinking that went into this bubble in the first place.
I/O mortgage vs rent is more like renting-with-risk than renting-with-benefits.
Renting exposes you to risk of rental cost increase; but you have the option to move or re-negotiate your lease arrangements.
I/O mortgate exposes you to housing market risk, interest rate risk, tax target risk, HOA rate and special assessment risk (if you have HOA), fire/flood/earthquake/etc. disaster and associated insurance market risk….
But you do get to participate in the benefit of speculating in housing price appreciation. Of course to monetize that benefit, you have to extract that gain in the form of increased debt, or: SELL AND BECOME A RENTER!