Just something to add - episiotomies are supposed to be better for directing the tear if it is felt to be imminent.
A tear that is predicted to happen by the medical professionals based upon whatever info they have (tightness, position, instrumentation etc) is quite often unpredictable in how bad it will be or where it will go. The point being that on rare occasions you can end up with a 3rd degree tear (eg through to the rectum
or other surrounding structures) which can be much worse in the long run - difficult to repair, needing theatre, continence problems...
Whereas an episiotomy is at least predictable, and they cut at the point where minimal damage will happen to surrounding structures hence hopefully saving your continence! It is the control element that is the reason the professionals choose to do this, not "making it easier for themselves". The need for quick delivery if the baby is in distress might also be a reason for episiotomy I would imagine.
Since tears can heal quite well, it may be preferable to do that if you wish to take the risk - and lots of midwives actually enjoy the challenge of putting you back together and doing a good job of it after a tear
. So its not straightforward to make the choice.
Personally (I am a FTM and 31 weeks and only recently realised perhaps I should think about this...) I have ulcerative colitis, so faecal continence is something that isn't great at the best of times... the risk of damaging that further than is already possible with childbirth does not appeal to me, therefore I would personally opt for the reassurance of an episiotomy if needed, so at least I know any further tearing is likely to head in a direction AWAY from my bowel...!
Sorry if TMI for anyone, but I felt I should put across my understanding.