[silviophonic]

Personally, I think love is an illusion. It's a combination of lust, momentary infatuation/fascination, fear of being alone, plus the ingrained idea that we need 'love' to give our lives meaning and purpose. These combine to cause a chemical reaction in our brains that we call 'love'.

I could be wrong though. Still doing research/field work on the subject.

That said, 'conditional' love isn't love at all. That's a transaction. Nothing wrong with that. It just is what it is, a part of human nature.