Well, I believe that it is more important to know what to do with our enemy than about having enemies. Real outer enemies are kept at bay when we are kind and do not retaliate their harm with more harm. If we are attained, we can even return kindness with the harm we have received. That's a true Bodhisattva-like nature. If we are not at that level, at the very least, we can strive to work harder to prove our enemies and naysayers wrong. Our enemies can make us stronger and more motivated at our spiritual practice and Dharma work.
As for inner enemies, we have to suppress them and ensure we are not them and they are not us. Our inner enemies like anger, impatience, laziness and so forth do not define us and we should not identify with them and instead find ways to alienate these qualities within our minds so we can easily minimize these qualities and eventually get rid of them once and for all. Lots of practice, studies and reflection is needed to get rid of the toucher more subtler inner enemies like ignorance. However, it is better that we get rid of them or we become what others identify us with.