I am loathe to delete comments - and have done so deliberately - only when the conversation became inane, zany, or irrational.
I like all comments, friend or foe, constructive or destructive, helpful or hurtful - I'm over all that. All I ask is that statements are made from your heart - whatever that means.
I apologize to commenters whose comments were deleted unbeknownst to me - and understand that an apology is not good enough - since the comments are time-sensitive - and usually offered during the heat of the discussion at hand.
I apologize again.
I hold Freedom of Speech Sacred - a small part of me dies every time - however infrequent - where I've deleted a comment - stifled an opinion - muzzled a contributor.
Those times I have, and I can count them on one hand - were justified.