The 5th point is the reason why you should be happy with yourself before embarking on a relationship with another person. Relationships are not the panacea people paint them to be, as all other human endeavours they require work, maintenance and commitment to be healthy and stable. And these can be provided once you can mainly focus on the relationship itself rather than on yourself.

Please note that this doesn’t mean that you’ll have to cancel all the work you do on yourself while being in a relationship, it just means that your self-work has become such a standard that you don’t even have to think about what you have to do to be happy by yourself, you know yourself so well that you do what is needed as if it was a second nature.

Also, avoid thinking about relationships as in your point 4 of the con-list: comparing instinctual behaviour acted by animals with reasoned choices performed by humans is belittling of our actions and an excuse to justify our worst behaviours. We are not (entirely) animals and we shouldn’t use them as a ruler to assess what is right and wrong in our day to day activities.

Best of luck for your future