Can't rebuild bridges with burned wood

Over the last few months, I been contacted by two individuals that after weeks and even months of not hearing from them and requests of not contacting them (will explain the reasons shortly), they wished to pretend that nothing happened and it's business as usual. I had to sit down and ponder this. After about 30 and 3/4 seconds of thinking, I came to a decision of not even talking to them deleted the messages. Why you may ask? Is it wrong for me to just not reach out if someone clearly is trying to talk and re-start a friendship? The answer is emphatic - NO!! I am not wrong and clearly justified in it. Reasons you may ask, well let me ask this?? Why would some people attempt to just burn bridges in the first place? Why attempt to brush people off for some mundane reasons. Or most importantly - why after you ask people to not contact you because of insecure people you been with or cause of situations you were in that deep down were not good, yet turned you back on them over common sense? Most would consider not trying to communicate with people who just walked out for dumb reasons as selfish - I don't think that it's the case. I just think that if many people who so little value over friendships and so quick to let it wither away like unattended flowers. I over the last few months have noticed how many people value friendships. And if many are so quick to burn them for various reasons. I just can not with clear conscience just allow anyone to walk back in with the possibility of history repeating itself? Can't rebuild a bridge with burned wood. And even if you can, do you really feel you there will be enough trust? I seriously doubt it. Just don't want to feel a fool. Already consider it for letting the effects get to me. But, their made their choice, and now they have to live with the decision. Does it hurt? Not anymore. I moved on - and so did they. I can not just let anyone waltz in after they tangoed out in the first place. I can stand by my convictions with it. Friends don't just do what they done. And I'm over it....they can try to build another bridge somewhere else. Just bring fresh wood for the fires later. SAW