1) Daft point, if there was a point to it.
2) Best also ground all those old 747-100 and 200s, the 737-200s, all the old 707s, plus a few of those more modern aircraft with high cycles. You never know when one of those might just break up in mid-air, just like TWA800 did, or that China Airlines 747 last year. What, no aircraft left in the skies I hear you say?