Every religion has its non-observant members.
1) Non-observant Jews may be under peer influence.
2) Convenience; desires. No one wants "bothersome" rules.
3a) Lack of proper information. People have inaccurate notions about their religion.
3b) Lack of Jewish education.
4) Unfortunate experiences. Someone who had a harsh religious upbringing or parent, may retain an unhappy feeling towards Judaism.
5) Many think that science, and specifically Evolution, have proved that there is no need for religion.
6) Intellectual laziness. Many people have simply never delved into the subject.
7) Stereotyping. People call us "religious nuts," etc.
Extreme Orthodox Jews don't allow dogs and cats inside their homes, because they're NOT kosher animals, and they can't understand that they're companions, NOT food.
Modern Orthodox Jews can have difficulty finding kosher pet foods, and the Shabbat restrictions don't make life any easier.
Every religion has its non-observant members.1) Non-observant Jews may be under peer influence. In high school, for example, the one religious student in a class may be subject to ridicule. This may have led him/her to become slack. 2) Convenience; desires. No one wants "bothersome" rules, or limitations to their personal pleasure. We see how lack of self-discipline has led Western society to epidemic obesity, drunkenness, divorce rates, etc. 3a) Lack of proper information. People have inaccurate notions about their religion. They've picked up tidbits, jokes, and "sound-bites," and on such solid authority they dismiss the entire topic. 3b) Lack of Jewish education. 4) Unfortunate experiences. Someone who had a harsh religious upbringing or parent, may retain an unhappy feeling towards Judaism. 5) Many think that science, and specifically Evolution*, have proved that there is no need for religion. 6) Intellectual laziness. Many people have simply never delved into the subject, to see if the truth and/or value of the Torah* can be convincingly demonstrated. 7) Stereotyping. People call us "religious nuts," etc.; so the average layperson may get a negative feeling toward their tradition. *See also the Related Links
1) Is Evolution real?
For many reasons. 1) There are concerns related to various details in Jewish laws, including kashrut on Passover, muktzeh on Shabbat and more.
2) Most of us cannot afford the added expense.
3) Most of us focus on caring for our many children and find that quite sufficient.
4) It is non-traditional to lavish love and attention upon an animal as if it were human (Rabbi Moshe Mordecai Epstein, 1866-1934).
Orthodox Jewish teenagers eat the same things all Orthodox Jews eat; kosher foods of all different kinds.
Lox is cured salmon but this is not specific to Orthodox Jews. Lox is the same regardless of its being kosher or not.
It depends on the level of observance. Orthodox Jews eat nothing BUT kosher foods.
Kosher food is not like a specific food. It is not like Hamburgers or anything. SOme foods are kosher and others aren't. Since most people eat all types of food, you can't really avoid eating kosher food.
Boys and men are given skullcaps for their heads and they learn the Jewish traditions and they eat kosher food.
Orthodox Jews don't, but Jews who belong to other branches of Judaism may or may not eat non-kosher foods, it's a personal decision.
Orthodox Jews keep a strictly kosher home.
Orthodox Jews
So long as the burger and all accompaniments are kosher, religiously observant Jews can eat it.
Orthodox and Ultra-Orthodox Jews are strict followers of Jewish law.
Orthodox Jews are only allowed to eat kosher foods.
There are many different types of Jewish people in the world, and many of them choose to keep kosher. The group that stresses keeping kosher and following the Torah the most are the Chassidic. See http://judaism.about.com/library/3_askrabbi_o/bl_simmons_chasidut.htm for more information