We aren't ridiculing people for feeling that sex is more than 'just sex.' We're taking offense that they insinuate that everyone else who has sex is giving a part of themselves away each time. Maybe for some people, you give away a little bit of your heart, make a stronger emotional connection, etc. But that's not what it's like for everyone all the time, and the sinister little assumption that you are somehow "giving a part of yourself away" like you have no control over your own body and that it devalues you in some way
pisses me off.
And also, Sparks? It doesn't sound stupid to me.
It just doesn't sound like something you do with a ONS unless you have an extremely unhealthy mindset.