¿Is life more expensive than death?

 I am 28 years old, and I have been through many things: working, studying until graduation, leading a volunteer organization and its various projects, living with diabetes for 17 years, losing loved ones, being in relationships and then being alone, and dedicating 10 years of my life to walking dogs almost every single day. To be honest, I feel tired. Why is life so hard?

And if I die, will I finally be able to rest?... Won't this phase of having no life demand so much of me? Is peace a solid reality in that phase?