IMO leaving the filter isn't reusing it, it's just continuing to use it.
If I remove a filter - any filter - it ain't going back on.

yearly- dealership does oil+filter
1/2year-i suck the oil and pour new. filter untouched (6000km is not much)
imho this better than just keeping the same oil in pan for whole year.
smallest debris will pass the filter anyway. 5µ? 10µ? 15µ? 20µ? who knows..
i do not expect big chunks on 4yo car - maintained like this. looks pristine.