Look at the human rights violations and civilian casualties committed by both the PKK and Turkey here: https://en.wikipedia.org/wiki/Kurdish%E2%80%93Turkish_confli...
There are families and civilians living in the regions being bombed by Turkey right now and they are defenseless because the Kurds dismantled their battle stations under the recent Turkey-US agreement.
The Kurds have been massacred numerous times throughout recent history by Iran, Iraq, Syria, and Turkey. It would be naive to think a militant organization wouldn't form out of the atrocities committed onto them by these various nations as a means to protect themselves. Not to say this excuses acts of terrorism and corruption committed by the PKK, but a blanket bombing campaign is the worst possible answer.