We feel attracted to things that lead to pleasant experiences. We then want to repeat those experiences. Our tendency to repeat pleasant experiences leads to attachment to those things that generate them.
Our inability to repeat pleasant experiences results in feelings such as sadness, anger and depression. On the other hand, our ability to repeat them strengthens mere likes to become wants, needs, requirements, appetites, compulsions, habits, dependencies, cravings, obsessions and addictions.
It is not only that we want things and experiences we like; we do not want others to have them. The underlying feeling is called jealousy. If we don't have them, we absolutely do not want others to have them either.
The stronger the feelings of our finitude, the stronger are the feeling of our likes and its offspring such as appetites, habits, addictions, jealousy, anger and depression.