What's the point of having combos?

Especially since there doesn't seem to be any guardstun(prevented from guarding after a hit connects) in the game. This benefits the defender since they can guard even if the messed up guarding the first attack, and with the threat of parries, 3 hit combos, especially ones with heavy mixed in, seem to be just reckless to attempt. I get having no guardstun will revenged, but it shouldn't be. Note that you should still be allowed to parry while guard stunned.

What do you guys think? Are combos in a bad to useless state right now because of the safety of guard , or is this the cause of another problem