I had both of mine with an early epidural because I hate pain and I just don't believe all the magic thinking out there about "good pain" (I am an anaesthetist
). Both were pleasant labours, even though both had to be induced for different reasons. All very calm, the second time around was actually completely pain free as my contractions were only mild cramp-like when I got the epidural (being second time around I was expecting it to escalate quickly and didn't want to take any chances). I read a book and then snoozed for a bit. Pushed each DC out within 15min when the time came, despite DC1 being massive.
Lots of people, including health professionals, confuse correlation and causation: the labours that get an epidural are typically longer, but because you can't do a classic randomised controlled trial, it's just pointing to a correlation, and not that epidurals necessarily cause a prolonged labour. In other words, no study out there can tell you whether a labour was going to be longer /require intervention anyway, because of known or unknown maternal and/or fetal factors ... rather than specifically because the woman had an epidural (which many ask for/get because it's not progressing well already). My own reasoning was that if I "won the lottery" for one of those, I'd rather have my intervention with adequate pain relief already on board, rather than get all the way to fully dilated only to then to have to get something in my back (not exactly an easy task at that point) or a GA in a hurry.
As the doctor who does them, I would advise not to wait until the last minute to request it if you decide you want one. We usually cover multiple locations so often cannot attend immediately on request as labour epidural placement is not an emergency and we might be tied up in one, especially after hours. With last minute urgent calls, by the time we get there, the woman is often fully dilated - by then it's usually too late (unless there are issues with the pushing) as by the time we'd get it in and established, the baby would be out.
And nope, I don't have any financial incentive in "advertising" epidurals! We don't get paid per epidural (in a public health service - I can't speak for those countries which have extensive private provisions), so if you don't want/need one, that's great, it's an easier shift as far as I'm concerned.
As others have said, consider everything, discount nothing, go with the flow on the day. Good luck!