Angels do exist

Being human can be so hurtful- the experiences are beautiful, yet elusive and transient. Only a few of us here know how to really control our destiny and feelings. Some of us radiate copious amounts of warmth, only to receive bitterness and coldness in return. There are angels in this world- look around you. I'm sure you know some. Angels are beautiful creatures who are equally beautiful in their minds and do not know how to hurt others. They have a special connection to god. They heal those they touch, without even realizing it. They do not know how to refuse a sincere cry for help. They are selfless to the point of being self-sacrifical. They do not belong on the earth- they descended from heaven- that is, ultimately, their home. People who kill angels or wound them are never forgiven by god.
My questions to god when I reach heaven will be the following-

If you really loved them so much, why did you have to send these angels to the earth to suffer? Why do you put thorns in the path of those you love?