LOL looks like I got under your skin a little bit. I clearly understand how universal healthcare works and I thought I explained myself coherently why I disagree with it.
Nothing dealing with taxes is proportionate and if you think this is the case then your are delusional. In the US, the bottom 50% of citizens don't even pay income tax. The only lifeline of universal healthcare is the forced charity by the upper class and middle classes, especially the former. Nothing is FREE (or almost) as you state. Someone has to front the bill.
You say how tobacco and alcohol are strains on the system, Why don't you just cut the bullshit and claim that they should be illegal? It is for everyones best interests, right? Do you have a fast food tax for people who eat McDonalds or a snack tax for someone who eats Snickers bars or chocolate cake? What about an XBox Live tax for fat asses who don't want to exercise and would rather play video games all day. There are so many things that are "bad" for you it is ridiculous to try and punish people through taxes for partaking in such activities.
For these reasons, you may be keeping your neighbor in mind, but your neighbor may not be keeping anyone else in mind. The system punishes those who maintain their own well being and the leeches thrive off of this ignorance.
If you really want lower healthcare prices, then the free market is your answer, not big government which is the most wasteful entity on the planet.