The word "compelling" means that something is so interesting, convincing, or powerful that it captures your attention and makes you want to believe or do something. Full definition
I felt compelled of the holy spirit to call him. (nakedpastor.com)
[Of course, in general, this & other potential risks offer more compelling reasons for excess cash to be returned to shareholders]. (wexboy.wordpress.com)
The mission is the entrepreneur's most compelling case for why the startup is going to achieve greatness. (entrepreneur.com)