[lanaer]

When an SSD modifies a page, it has to erase & rewrite the entire block. SSDs try to avoid this by marking the block as “free” and writing data to an entirely different block, if one is available.

The point here is that in order to write a tiny bit of data, SSDs have to write to a larger portion of the drive (usually).

So reducing the # of tiny writes should lengthen the lifetime of the drive. It's theory, but the theory is sound enough to me to optimize for it if there's little or no downside to the optimizations.

Edit: though, as noted elsewhere, these drives will generally last more than long enough, so the effort is probably unnecessary.