"What is the purpose of learning Buddhism ?"
This is a favorite question posed to many Buddhists.
From a Tantrayana point of view, one can attain three great benefits by learning Buddhism:

The first is "One can be enlightened as a Buddha in one's life ."
The second is "One can obtain a siddhi - (Pureland).
The third is "The capability of helping others eradicate calamities, accumulate merit, generate loving-kindness and subdue evil force."

If you are asked : "What is your objective of learning Buddhism ?"
You may answer as such :
"For the purpose of being enlightened as a Buddha and to be reborn in a Pureland. I can carry also out rituals to help others!"

Although some may go even further to ask you : "Why do you want to be enlightened as a Buddha ? Why do you want to be born in a Pure-land ? Why do you want to have power generated by dharma ?"

These three benefits will lead you very far.
Once you are enlightened as a Buddha - You are free from any anxiety, as you have full self-mastery of yourself. Born in a Buddha Land, you will always enjoy bathing in rays of brilliance and happiness. If you have dharma prowess , your wishes will always be fulfilled.

By learning Buddhism, you are taking steps towards self-mastery, freedom from anxiety, brilliance in your body and mind, purification in your body, speech and mind , and the enjoyment of runs of good luck. Are these attributes not widely sought after by our fellow human beings ?

Put in some deep thought and we can find a perfect answer to these questions! Of course, there are those who like to hold a heretical view: "Why must I be a Buddha ? I prefer to live in this world."
"I dislike this Samsara world, maybe I will enjoy more in the nether world !"
"To me, a dog may lead a better life than a human being."

Learning Buddhism has the following benefits:
One can
1. can be enlightened in a single life.
2. be free from any form of anxiety.
3. have self-mastery.
4. bathe in rays of brilliance and happiness.
5. enjoy runs of good luck.

If you have all these benefits, your life will be most perfect. - This is the most perfect answer.

Having to reside in hell or be born as a dog will not be as perfect, as we would be unable to control our lives and sometimes our lives can be very miserable. This is where the crux of the problem is.

Om Mani Padme Hum