I am a numbers guy, so evaluate things that way. I am shopping for a new tractor ($35-45k) and have estimated a worst case cost of $26k over 10 years. About $26/hr based on 100 hr/year of usage.
Quantifiable savings are $18k for snow removal and road maintenance; and about $6k in heating costs by being able to process and use firewood easily and effectively. Just about break even. Of course there are other tasks that become easier and doable when there is a tractor sitting there. Food plots, brush removal, moving stones, etc etc.
Only looking at cost does not mean much unless it is a toy. If you are doing meaningful work that would need to be paid for, there are savings to factor in.
Labor savings and reduced fatigue are more difficult to quantity but still add "value". Then there is the ability (especially for an older person like I) to be able to live longer in a rural area and not be dependent on others.
In the end, I doubt my tractor will cost very much after only 10 years. It will add to my quality of life., And the longer I keep it, the more I will save. YMMV.