The Honest Trade-Off
Removing enamel is permanent. A prepared tooth will need a veneer or a crown on it for the rest of your life, and when the porcelain eventually needs replacing, that is a cost to plan for.
That is not a reason to avoid veneers. It is a reason to be sure that something less invasive will not get you there first. We would rather talk a patient into bonding and whitening than fit eight veneers that were never needed.