I've been running my main system off a Linux persistent LiveCD flash drive for a couple months. The drive has a 2 GiB fat32 boot partition, and a 12.91 GiB ext2 casper-rw partition. I'm running Linux Mint 16 Cinnamon 64-bit, and it's meeting all my (minimal) performance needs.
Is this okay for my flash drive and for my computer? My RAM hovers around 40%–65% usage, and never needs swap (no thrashing), and it seems pretty fast for the most part.
What, if anything, do I need to worry about here?