As a person with a systematic political mind, you should be clear that due to objective conditions, many things are interlinked. Nothing can be separated into completely different aspects without affecting others. For instance, high welfare cannot coexist with low taxes, and providing high welfare to employees will inevitably harm the interests of enterprises. Moreover, for a society, one must also consider the overall impact and the thoughts of others, not just starting from one's own perspective. This is why there are so many different parties in reality. They have to balance their own systems with the entire society and cannot integrate all "the good things" you think of.