When did the complexity and simplicity of love become diluted into loving everyday objects, services, experiences, etc.?

Throughout life, much of my time has been spent seeing the potential in others and having thoughts - if they would just do XYZ or ABC, I believe they could find happiness, prosperity, the knowingness they seek, etc.

Really? How vain am I to think that I could understand what someone else should be doing, saying, or being to make their life better?