Stupa is a symbolic representation for the level of awareness of humanity. It is in just the same way as the mountain of awareness presentation. As a member of humanity become more spiritually evolved. He will become less dense with a finner vibration. Accordingly then his level of awareness or consciousness will rise. Lower humanity is at the bottom. Middle section is for average humanity. Top section is for higher man; who eventually become lost to the material world as a fully dissolved being.
Suicide is not only an illusion of escape; it will also delay your spiritual evolution. Message for all who choose to act only as individuals; because they know everything. Perhaps in some cases there may be thoughts of suicide; which is a natural consequence for the isolationist approach. Choosing this path is such a very unwise life choice. Furthermore the following presentation is a clear and complete explanation; for the only valid or wholesome way to escape illusion.