I'm neither Islamic nor Jewish, I simply don't eat pork because I've read the entire bible and believe that a Christian is obligated to abide by the entire bible, and I don't eat pork, I observe all of the dietary laws, feast days, jubilees, etc. I don't celebrate Christmas or Easter because Jesus never did so and He never said to do so. I celebrate the days He celebrated, such as Passover. If He thought His birthday was so important as to warrant being celebrated for eternity, He'd have told His followers to mark the day and celebrate it.
I could say, "I don't eat pork because I'm a Christian" but then 95-97% of people who self-identify as Christians (despite having only a basic/cursory understanding of a few limited portions of the bible, maybe some of the psalms, a bit of the Gospel of Mark, perhaps some of Revelation) would say, "but I'm a Christian and I eat pork, there's nothing wrong with pork" and it would start a huge debate that won't ever end.
It will have to be sufficient for me to say that I've read the entire bible and I am trying hard to live the entirety of the Law. One example being interest, you'll never wind up owing me interest if you ask me for money and I lend you some (as opposed to just giving you the amount and telling you to put it to good use- which may very well happen). I don't believe in interest because it is condemned, I don't believe in being idle/slothful because it is condemned, I don't believe in the state usurping the parent's authority over children because it is plainly stated a father owns his children and can have a violent/unruly/profligate/worthless son put to death if it becomes necessary (for instance, striking a parent is a capital offense in the bible, the punishment is death by stoning- the parent has the right to exercise that punishment, although mercy is generally praised as a virtue, but that right does exist).
I could go into all those details and get into huge debate after huge debate, but I'll just give the summary and say I'm trying my best to live the law and keep myself clean and pure, and to do as commanded towards my fellows, He hath shewed thee, O man, what is good; and what doth God require of thee, but to do justly, and to love mercy, and to walk humbly with thy God?
I shouldn't be condemned for my abstaining from pork. If somebody wants to debate on the health merits or health issues of pork, that's great, we can have that debate, it may be productive, indeed if somebody wants to show me any evidence they have that pork is safe to eat, I'll read it and offer my rebuttal, but I won't ever be swayed to the point of eating pork. I take my religion very seriously, but I'm up for debating the biological/health issues of pork.