We appreciate your concern; that's a wonderful attribute in a believer.And please understand my genuine concern for you and others who limit themselves with old views. Like monogamy and polygamy there is another view. And another freedom.
I want to ask though, do you really think our lives / spiritual lives are so "limited" because we keep Gd's Law?
It's not so hard actually; I find as @Nikud mentioned many church traditions are MUCH more legalistic and difficult to swallow than having certain holidays and diets. Everyone I've met who keeps Torah LOVES it; it's not a burden or limitation and in the end if we were wrong, so what? We went without shrimps for 100 years or so; but if we were right ... well heck I don't even have any idea what it means to be called "great in the kingdom of heaven" as the Messiah calls the Torah keepers but it sure can't be too bad.