Personal growth and challenges. Not being lonely. Fulfilment. They would be the main motivators for wanting to be with someone special. That's it, someone special to share your life with, and vice versa. Your ups and downs, wins and losses. Your partner is the rock on which you stand.
Being in love is important to many people because of the security of having someone to share all the happy and sad moments, to receive and give mental and emotional support, to enjoy long drives with someone, to cuddle up in front of a cosy fire and a nice movie with popcorn. True love helps us to develop our self-esteem and take over the world anytime of the day.