Then read this article. The two most salient points are that becoming a tenure-track law professor is far from "retiring," and the job is primarily "a writing job, not a teaching job." If, for example, you have no law review publications, almost no one is going to take you seriously as a faculty candidate, and certainly not as a candidate to arrive with tenure. If you want to teach as an adjunct for fun, that's another story entirely.
I've on occasion had prominent government attorneys approaching retirement waste my time trying to persuade me that they would be the perfect candidate for a senior (tenured) appointment at GMU, even though they had none of the most significant attributes (most important scholarly record/evidence of scholarly promise) that we look for in any faculty candidate, much less a candidate seeking immediate tenure, and had no intention of remedying that before they went on the market.