There are lots of good reasons people cite to support not keeping kosher, from scandals at kosher slaughterhouses across the globe to the Mafia-like tactics of some kosher food distributors. But the best reason not to keep kosher is that many of the kosher 'laws' we follow today are really nothing more than humrot (stringencies) and customs, not actual halakhot – as this post shows.
From an article in Yeshiva World [emphasis added]:
…there is a halachic debate as to the status of milk-derived lactose. Rav Elyashiv zt”l (See Kovetz Teshuvos #73) and Rav Moshe Feinstein zt”l are both widely quoted as holding that lactose is not considered Milchig. I regret not having quoted this position in my original article. Rav Yehudah Shershevsky, a Rabbi and chemist in Israel, is of the opinion that lactose is considered Milchig (See Glatt Nissan 5760 page 306) as are some Poskim in Eretz Yisroel.
Nonetheless, the Shaivet HaLevi (Vol. II #118) and the Tzitz Eliezer (Vol. 17 #76) also rule that they are not to be considered Milchig even though they do come from a milk product.
Rv Elyashiv provides two rationales for his statement that it is likely that it is not to be considered Milchig. #1 it undergoes a process rendering it inedible. #2 it is derived from whey which is halachically different from milk. He writes that although the Shach forbids consuming whey and meat together, it is likely that it is because of Maaris Ayin and not because it is considered truly Milchig.…
I post this just to show that much of what we consider to be mandatory with regard to keeping kosher is really not much more than custom added over time. The waiting period between eating meat and eating milk and many other things in kosher food law are like this; stripped down to its biblical roots, you could cook a chicken in cream sauce, eat it and not violate any halakha. Similarly, you could eat a burger and follow it immediately with ice cream or a milk shake, or you could even melts cheese on a cooked burger and eat then eat it, all without violating any Jewish law.
Many people who have learned Shulkhan Arukh Yoreh Dayah for smicha – outside of those who learn the material in a very restricted fashion under the tutelidge of Chabad rabbis and the like – know all this. However, most Orthodox and haredi Jews don't.
But they should. Because if they did, many of those weird humrot (stringencies) they follow because they think they have to would fall away, and the price of kosher food would likely drop significantly.
Does this mean I think you should stop keeping kosher?
No. That's a personal decision – one that shouldn't be made based solely on anything I write.
But it does mean that you should realize what generations of rabbis – and now the kosher food supervision industry – have done to Judaism and think about that every time you pay exorbitant prices for substandard kosher products.