Lovestruck's biggest flaw

Lovestruck doesn't autogenerate turn-ons and turn-offs for sims you're not playing. (and starting a new file doesn't make the game generate them either) 

I don't mind setting them individually for MY sims, but the pre-mades in every world are virtually un-romanceable because they don't have ANY turn-ons/turn-offs, so they always reject my sims, even if I build up the friendship bar before flirting with them.

It ruins my gameplay in more ways than one. It's counterproductive to what the pack was trying to achieve, because every sim by default is cold and unresponsive until you manually set their preferences. And I just don't feel like doing that for EVERY. SINGLE. SIM. It's too much and would take forever.