You haven't made any kind of case against a second referendum, in this reply. In fact, the highlighted part would suggest you agree that the first one is flawed.
Do you have anything else, other than 'because'?
The decision making of the electorate was manipulated in a deceitful way by both sides which will happen again in any election and during this 2nd referendum if it were to happen.
Politicians lie, a politician's career is based on making your lies as convincing as possible and your ability to nullify any damage to your credibility when you are found out.
Both the conservatives and the labour party have been elected countless times on lies and have done completely the opposite of what they promise after re-election but yet before this brexit situation developed, the electorate kept voting them in.
The UK should use this opportunity to unite, whatever the result and defeat the status quo. So far, the government is failing the country big time and the electorate needs to focus on getting people in power that whatever the outcome, brexit or no brexit are able to actually lead the country forward
and not this referendum nonsense.
One thing is certain, if the brexit decision would be reversed, the UK's negotiating position will be much weaker in the EU than it was before the original decision to leave was taken.