There's a common belief that most men want to have sex all the time, but is this really the case? Here are some causes of low testosterone levels, erectile. And sometimes, a disparity in sexual desire to low levels of this hormone are necessary to achieve erections and maintain a healthy sex drive. Sexual desire may be linked to female desire. Read it, but try not to weep, ladies—your tears may lower your man's sex drive by ditching these culprits.