I see people say this all the time, but so far I have never seen any convincing arguments for why I should stop using my work laptop for personal use hah.
Even companies that don't necessarily want this stuff will have it forced on them by this or that auditor soon enough.
And that's just the privacy angle.
If you were to work on any personal projects on that company laptop now you have an intellectual property mess on your hands.
In the rare case there's still a depreciable value on the books there is an additional severance payment equivalent to the final "value".
It depends on the device. A 3 year old M1 MBP is virtually identical to an almost brand new M2 MBP. There's no need to chuck an M1 MBP in the trash (metaphorically and literally) just because it's "3 years old".
Now if it's a 3 year old low end Intel machine then I'd be more than happy if it went away.
If we can attest that no IP left with them and the device is out of its service life, sometimes we'll let them keep it out of pity. Ironically the most frequent justification is recognizance that they don't own a computer and can't easily look for another job.
Is that really worth it to get back what I would assume is on average a 3 year old laptop? Do you then re-issue this old, used gear to your new hires?
That aside, using your work equipment for personal stuff (or vice-versa) is just a really dumb idea.