This all sounds so weird coming from germany since here you do you bachelors degree, then your masters degree and then optionally your PhD. While the usefullness of the PhD and its duration vary between subjects (in IT it takes 3-5 years and is not really worth it money-wise if you go in the industry afterwards, while in medicine it can be done in a year or even less and is basically necessary). Also while you do your PhD you are usually employed by the government (since universities are public institutions) and paid well. A PhD earns you social prestige and prestige in the industry since - besides in medicine - nearly no one has one.
I guess everyone understands that you are talking about US phds, so no worries :)
But yeah, doing your PhD in europe may not be simpler (we have to give lectures, organize seminars etc.) but considering that you get a good pay for your research as well, it is definitely a good alternative to going directly in the industry. However, doing your phd during your masters thesis or even starting without a masters degree is very uncommon, so you usually need more time to get it.