We are suppose to vote for people, sadly far too many people vote along party lines regardless of the qualities of the actual people involved.
You are confusing "proportional representation" (which is a continuous-valued property of many election systems) with "party list proportional" which is a particular election system for achieving a high value of proportional representation.
Notably, Single Transferrable Vote is a system in which people vote for candidates as they do in FPTP elections (except using preference ballots), but which is designed to acheive proportional representation.