Now You Know!
The curses in this Parsha are not simply punishments. They are intended to bring one back to HaShem, as evidenced by the change in the order of punishments versus blessings. The blessings start with greater ones, while the curses start with lesser ones.
In Michtav M'Eliezer, R' Dessler z"l writes about the purpose of yissurim, suffering. He says that there is actually no purpose to suffering in and of itself. Rather, it brings us to tefila, prayer.
Were we to daven without the suffering and pain, there would be no need to bring it upon us.
He quotes Chazal that the reason the Avos/Forefathers did not have children was so they would daven, because HaShem desires the tefilos of tzaddikim.
We have so much suffering in the world today, one can only assume that we don't daven enough, or with enough concentration.
If we strengthen ourselves in prayer during the time of Elul and the Yomim Nora'im, we will undoubtedly be blessed with a sweet new year, with no additional suffering necessary.