people keep all kinds of valuable things at home. cash, jewelry, coins, art, cars, kids ect. most of the low-level home invasions tend to involve drug addicts looking to steal something that they can turn into quick cash, or just the cash itself. its no surprise that somebody like this might be a bit unstable.

the modern drug cartels have evolved much more into true organzized crime, with organized being the key word. these groups have become much more diversified by looking to supplement their income with other activities, and home invasion/burgluries are a great way to make money. kidnapping for ransom has also become big business for them on both sides of the border, with phoenix arizona being a prime example of this.