There has to be a point when being sober and present outweighs the "highs" associated with using.
"Nirvana", as you have called it, only lasts for a very short period of time and then its the aftermath (hangovers, behavior, emotional, mental, physical, financial struggle) that needs to be dealt with. I spend way more time in the "aftermath" then I do in the "Nirvana" state. The aftermath was getting more severe and detrimental.
Its not really worth it when I lay it all on the table and look at my life as a whole.
This sober road is not linear and it may take a few tries of abstinence and relapse before recovery sticks. I am not saying it is okay to relapse but it is par for the course for a lot of people.
When drinking or using becomes habitual it is very hard to retrain ourselves out of that habit but we do it and it becomes easier with time.
We all have today. Just today.