The OP's post really baffles me. Is it worth it now? That a question implying it's only worth it if the value TODAY can be exchanged for more USD than the initial investment. Are we that short sighted?
A little scenario - lets say it dips to $200 tomorrow and you've invested 10s of thousands of dollars into mining hardware so you decide it isn't worth it because the electricity is actually costing you more than you're getting in return... so you pour gasoline and light a match on all your gear. Two months later, had you continued to mine you may have mined 50 additional bitcoins continually spending more money on electricity. Then the price spikes to $1500... was it worth it?
if you had used those "10s of thousands of dollars" to buy btc instead of mining hardware then
your hypothetical rise from 200 to 1500 would have been a much happier event