What's the use of the Party-list system?

Seriously? What's the use of the Party-list system? I know its intended purpose but what I fail to see is the actual purpose it serves. It's supposed to give a better voice to minorities. I'm all for that but a party-list system just doesn't do it and if you look at the 134 party-lists you could vote for, you'll notice some of them don't actually represent minorities or they can actually be represented by local congressional districts.

Take for example, Ako Bisdak. That's not a minority by any stretch and the Bisayas are already represented by their own local districts. The same goes for party-lists like, An Waray, Ako Bicol, and Amin (Mindanao). There are a lot of party-lists which do represent minorities like teachers, farmers, garbage collectors, PUV operators, etc. What makes these redundant in my own opinion is that they can actually field candidates in their own locale as opposed to running a nationwide campaign.

Take the example of Butil. Butil says it represents rice farmers. I believe them. But wouldn't it make more sense for them to field candidates in rice producing districts? The campaign costs more and the issue would be closer to the hearts of those within their own locality.

Some party-lists are one which simply want to put forth a specific agenda. In other words, you're voting for the policy, not the minority. Examples like, Ako (anti-drugs), ACT-CIS (anti-crime and terrorism), Duterte Youth, etc. Some party-lists don't even try to represent a minority. They just represent a general idea. As much as I'd want to mention their names here, it's best you go through the names (https://www.rappler.com/nation/politics/elections/2019/221971-party-list-groups-2019-polls). Some don't even try.

This leaves us with the true minorities. Minorities that appear in almost every province throughout the Philippines. Party-lists which represent teachers, women, the youth, workers, etc. I'd understand if these are the kinds of party-lists which ran. However, these groups may still field their own candidates in local elections. There's nothing stopping candidates who have a heart for teachers to run for higher positions. Candidates the fight for women's causes are also not barred from running. Look at the winners of the past elections and you'll see a lot of women there.

Workers' rights are also a constant topic that is being asked of candidates. Again, these are issues that can be brought up to the congressmen of specific locales. It would actually do them more good to do so as they are forced to convince numerous congressmen to fight for their cause rather than settle for one measly seat in congress.

Really, there are no issues that a local congressman cannot put forth that needs a party-list congressman to fight for. I really truly believe it's time for the party-list system to die. These smaller parties can still be active in the national scene but will have to push their agenda directly through their local congressmen. If a cause is important enough to fight for, I think it will get traction in the local level.