The BIG question - Why Are They Coming Here? (To The West)

It seems to be almost all fighting age men that are illegally invading western borders, and then being housed for free and given benefits that exceed what our own registered citizens receive.

Common sense begs the question of why is this happening in this way. It seems far fetched to me that these men are arriving for any other reason than refuge or a better environment, but when you look at the facts, they simply don't add up - we need straight answers, and quick?