Most of the people I know that signed up for the military did so because they didn't have any other options out of high school. Their grades weren't good enough for college, their families were too poor to keep supporting them, and the job market (especially when I graduated high school in 2009) was so shit that the military was the only viable option for a lot of people. We have slim to none in the way of social safety nets in this country, and for the people who want to try to get some semblance of stability and self-sufficiency after high school, the military is often the best and/or only option.
Your stance here is woefully narrow-minded and completely ignores the reality faced by many young Americans who are just trying to make their way in the world. It's hideous and abhorrent that our systems are set up like this to the point that the military is a lifeline for many young adults, but I'm not going to blame them for believing the ubiquitous propaganda or making a calculated choice to try to survive in this capitalist hellscape.
Most of the military members I know are well aware of what the end result is, and the ones that are sticking it out for a prolonged career are doing so in order to try to change things from the inside. Most of the ones that did the minimum amount of time and got out are aware as well.
And for this part: > But I cannot respect for a second someone that served in the military and also advocates for others to do so. Because all they are saying is “well, it’s ok to bomb innocent people and disrupt entire countries because otherwise I couldn’t have afforded college”.
There are shades of gray here and you are stubbornly ignoring any nuance that might exist. For a lot of people, it's not just a matter of being able to go to college, it's a matter of being able to eat regularly and keep a roof over their head. There are plenty of veterans that fully acknowledge that being in the service comes with many problems and ethical quagmires, but they still recommend it for people in the position of having to choose between destitution or military service.