How many of you support resigning without offer letter when you have 11 years of total experience in which 8 years in Accenture?

If you are extremely fed up with the current org and are confident about your savings and your interview skill then you can do without an offer letter. Otherwise no

It’s a personal decision. Public opinion would be most likely tend towards no and it’s rightfully so.

Although it’s still personal. There could be many personal events that could be happening at home, in office or even in your head that you need to consider

If you have runway till the time you get a new one then you can resign without offer.

If not get an offer first.