LUKS all things?

So, ive been trying to secure my home system to a resonable extent as of recently. My threat model is mostly considering petty theft, limiting corporate tracking/etc., and prevention of exploits via malware.

So to say im not looking to try and have NSA levels of hardening, just being sane and viable without making my system a full time job.

This leads me to my question for folks who swim in the LUKS encryption pool.

Do you encrypt all your drives with LUKS? Why or why not? Is that even a good idea?

Im looking to plunge into the pool and secure my system further.

Yes. This includes both drives in my laptop and all external drives.

The main reason is that most of these contain personal data, or backups of that data. Gives me peace of mind about theft and accidental loss.