Good to hear, it runs stable, but take a google on "sd card corruption rpi".
I've had my share of issues and also on this forum there are multiple topics on corrupted cards.
Mainly caused by a lot of I/O traffic and limited power to the Pi, causing the Pi to crash from which it can't recover. As the Pi is not a powerhouse.
And keep in mind, the SD card was designed to flash files to it, not for random R/W access. There is no communication back to the OS if the card is still writing, powering down on this moments causes the corruption.
So if you have an SSD laying around, doing nothing.... use it for the Pi.