Why is there such a lack of creativity in lawmaking?

It seems to me that politicians and lawmakers merely put band-aids on wounds instead of understanding the real reason we have laws: to stop violence, theft, and destruction. Think of any law which you stand behind and it should fit nicely into at least one of those categories. Science is most often ignored when solutions are sought.

Lets take the broad category of theft and briefly try to find an alternative solution. Why do people thieve? Generally people thieve because they desire that which they do not have, which is due to our competitive nature combined with inequalities of wealth distribution. So lets solve wealth distribution: poverty. So 1% of the population has 43% of it's wealth. If we merely taxed the top 1% 20% more every year, 80% of America could be on equal terms, income wise. Theft would drop to nearly 0. By taxing the wealthy at levels lower than Reagan, we could nearly eradicate one of the three bains of existence. Then we could take roughly half of the 1.5 Trillion spent on national defense and spend it on infrastructure instead. In just a couple years we could reduce joblessness to record lows. And instead of designing and building expensive destruction devices, we could design and build cheap incredible construction devices to create cheap transportation for nearly everyone.

Why are ideas like this taboo?