End of day, there are pros and cons of Big4. It is not exactly go Big4 if your grades are poor and etc.

There are plenty of reasons of not staying or going to Big4 audit. If you find something that suits you better, go for it. If there are people who think Big4 is wonderful fairyland without any faults, I am pretty sure I can find enough reasons and convince you to not stay.

But if you decide to go to Big4 audit or want to continue to stay, then go ahead. For all the **** that you have to go through in a Big4, there are certain merits to it such as:
stable progression; office politics are rare until you reach M or are unlucky enough; there are certain part of the work that is useful and interesting especially if you like accounting. But you will need to know how to stand your ground or have a supportive manager/partner; there are useful skillset and resume experience and you can have a decent career within or outside Big4; automation is not gonna replace audit even though everyone says automation will replace auditors in 10 years time every year.