There are 245 verses in the Quran that could be considered "positive verses" about non-Muslims. Every single one of those verses have been abrogated (nullified, overridden) by later, negative verses about non-Muslims. Not one positive verse about non-Muslims is left.
In contrast, there are 527 verses of intolerance toward non-Muslims, and 109 verses specifically advocating violence towards non-Muslims. Not one of these verses has been abrogated.
My conclusion: Non-Muslims who like Islam don't know much about it.