Broadly speaking, there are only two. First of all, life is never perfect, for things do not always go right for us. In fact, for some, life can be downright miserable. It is a no-brainer that we should want to live a most happy life forever after we die. Coming right down to it, we can either accept the offer of eternal life from Christ as he promised or turn him down and end up living the most miserable life apart from him for all eternity. It's a choice between "from bad to perfect" and "from bad to worst."