When you need it
If you do not have 2X then you will always be limited to where you really can go. If you do not have it, then I guess you will not miss it. I have used mine some here in the sand of Gaines County. Not serious stuff like around Kermit. The key to sand is speed. And having the rig in 2X before you need it. It also would make it easier to re-sell
It is like my Ford F 250 4X4. It has been in 4X4 rarely. But every time it has I NEEDED it. DId I waste my $$ on the 4X4?
It has kept me from some long walks.