They also tend to overlook that his connection to Beck was never real, and constructed solely on his fantasies and constant surveillance of her in private conversations and emails.
What You viewers who love Joe tend to overlook is that he goes about this the wrong way, choosing to try and manipulate others into their best selves rather than accepting them for who they are.
Joe Goldberg just wants to be loved, and at times, he does seem like a hopeless romantic.