An epidural may remove pain but if you end up with episiotomy and / or forceps vacuum to go with it, the pain can go on for weeks - and for some last a lifetime. Not all of course, but statistically you are more likely to end up with those things if you opt for an epi. Makes much more sense to try and avoid that so you can avoid the rest, especially if it means you cope and are supported well and dont feel the need for the epi in the first place, i.e. with a doula, or continuity of care as you would get with an independent midwife.