Short consistent links I am in control of.

If I link to a something about a product in article on and the I decide to build a whole sit about that product the redirect can be shifted.

same can be said about affiliate links which notoriously have to be changed.

Also advertising codes in off line venues for example:

To take advantage of this offer go to tinkylink.com/abc that can be consolidated in the future and go with 20 other offers to the page tinkylink.com/xyz or split off where all offers went to one page now they go to individual page.

Way more control with easy urls and quick editing.

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