My question is, given what I do, does it make sense to keep it instead
of selling, it is awfully nice for drilling larger holes. At the same
time it is more dangerous due to power.

i

I consider quality tools as good as money in the bank. Use it while
you need it, sell it when you need money for a profit. Machine tools
appreciate faster than bank interest. maybe not as good as the stock
market, but certainly a sefer investment.