A good approach used in industrial/embedded applications: use a read-only root volume. If you don't write to your SD, you don't wear it out and have no risk of file system corruption either. It's quite a lot of work though, since most packages assume they're installed on a writeable file system.
Debian wiki has a (pretty bad and outdated) page on the subject https://wiki.debian.org/ReadonlyRoot#Enable_readonly_root