And I'm just the guy to lecture people on the evils of taking back a move.
The OP said we were to discuss it, so......... 🙂
Don't do it or allow in an OTB game even friendlies it encourages
very sloppy thinking and is against the rules.
Here however. You can play your move on the board.
Look at it very carefully to see if it is a blunder.
If it is you can take it back and choose another move.
Before you 'send', you can take back as many moves as you want. That is OK.
The time to 'Take Back' a move was here in your game v Lord Shark
played in May 2010.
Game 7434598
In this position with you White to play.
You castled Kingside.
Taking back that move before your pressed 'Send' would have been a good idea.
Guess what Black played to bring the game to a sudden end. 😉
You could have set a wee trap here instead of castles King-side.
[FEN "r3k2r/pp3ppp/2pb1n1q/3p4/3B4/1P2PP2/P1PN1QPP/R3K2R w KQkq - 0 1"]
1. Bb2 {Backward unoffensive moves are good trap setters. Now if Balck grabs the h-pawn.} 1... Bxh2 {Note that 2.g3 does not work because Black can play 2...Bxg3! That is what you want him to see so he thinks he can nick the h-pawn setting an exchange winning trap. However....} 2. Nf1 {A backward attacking Knight move, a trap setters ace in the hole. You would surprised how often they are missed. Black cannot wriggle out of it with Bg3 because....} 2... Bg3 3. Nxg3 {...the Knight holds the Rook. Good. You are learning from a Master Trickster. Now go through that again and see what is wrong with it. Try not to get into the habit of taking moves back. Try to get into the habit of checking everything for yourself and trust no one. Always look before your press send.}