Travelers cannot flexibly adjust Schengen visa travel dates after approval

People who have already obtained Schengen visas face rigid date restrictions and uncertainty about whether they can travel on different dates than originally planned. This creates anxiety for travelers with changing circumstances (flight delays, work schedule changes, family emergencies) who don't know if using their visa outside the approved window will result in entry denial or visa cancellation. Current solutions require expensive visa reapplication or contacting embassies with unclear guidance.