howdy there empress! Your parents are a great role model! 30 years is a long time in today's society, at least in the United States.
Marriage and the nuclear family is the bedrock of culture and a healthy society because it is God's design.

And for Believers the marriage vows aren't just a legal agreement but a sacred Covenant between the couple before God so yes it is very serious and very destructive to dismiss it as a trivial inconvenience if things are not working out.

God takes covenant oaths very seriously and there is a reason divorce is so damaging. That's not to say that it is not the best option in some cases.

Thanks for the thought-provoking post, great job!