Let me know how not having a missile defense shield works out when North Korea finally manages to start hitting things with their thermonuclear or dirty ICBMs (it is only a mater of time, as they keep at it unchecked). Or when Iran starts shooting ICBS at Israel, or Russia starts shooting ICBS at Eastern Europe. Defense is one of the fundamental things that the government is supposed to do. Yes, there is suffering abroad and at home, but there has always been suffering, and will always be suffering, it is impossible to eliminate, and charities do a far better job than the government at alleviating suffering. What anti-military types like you fail to understand is that conflict requires both sides to stop for peace to resume.
Hypothetically, if someone hates your guts for some reason and come to your house and start hitting you in the face with a baseball bat, someone needs to make them stop, or they will just keep going until they get tired (which might not happen for a long time). You want the police to come and make them stop with their tasers/guns (coincidentally more powerful than a bat). The military are our tasers/guns/ability to project force around the world. There are evil people who would rule the world if there was no constraint on them (look at ancient history, it was a procession of countries conquering the known world one after the next: Sumeria, Babylon, Assyria, Persia, Egypt, Greece, Rome, British empire, et al.) They all rose up and conquered the much of the known world.
The Germans tried to do it in WW2, but were defeated by the US, the USSR wanted to do it for 70 years but were held back by the US and MAD, the Russians and Chinese would like to do it now, but are held back by the US. North Korea wants to invade South Korea, but is held back by nearly 30,000 US troops stationed there. Notice the trend? Since the US rise to superpower status, the aggressors who would conquer and rule the world have been held in check. If the price of a relatively peaceful world is a few people who have to find support somewhere other than the government teat (or heaven forbid, get a job) I can live with that, and the millions of lives saved across the globe by not having WW3.