Oftentimes people are sent back from the checkpoint for no good reason. Suha Arafat herself has stopped leaving Gaza because of the harassment she, the first lady of the Palestinian people, has endured at the checkpoint. Passage through the Bethlehem checkpoint is no less arduous. Students cannot get to schools in Jerusalem. People cannot get to hospitals outside the territories, and deaths are not rare.
Terrorism is a valid concern, but it exists on both sides of the borders.
Clashes between yeshiva students and Arabs in the Old City are provoked by both sides and result in deaths on both sides. It was not a Palestinian, but an Israeli, who murdered Israeli Prime Minister Yitzhak Rabin. The Israeli government eventually removed the settlers only because they were encamped on an archaeologically significant area, but allowed special provisions for the settlers' later return. Settlements may be the individual work of specific groups, but they are more often than not endorsed and protected by the Israeli government. These small-scale annexations are clearly not the work of peaceful people.