Well, there is a thin line between 'validation' and 'denial'. Some people use their need for validation in an attempt to keep going the same way they are going, however destructive that is to them and/or to others (e.g. if children are involved). They do not want and absolutely refuse to hear any other perspective. That is dangerous.

Example: someone living with a cheating spouse and making excuse to keep staying... someone living with an abuser and angry whenever anyone suggests looking at the relationship etc.

I would respect these posters asking for validation and won't respond if I disagreed. But I will most certainly not lie and post on these threads just to validate a choice that I believe is unhealthy.