I am a dentist. I do not believe any of this "toxicity" stuff. It simply is not true. There is no scientific evidence to support the theory that root canals are "toxic".
There is a TON of pseudo-science online to "support" this theory, but until I see a peer-reviewed, large-scale, multi-center study that supports this theory, I do not believe it.
I have done literally hundreds and hundreds of root canals, if not thousands.
You know what IS toxic ? Infections. Infections are THE major reason why root canals need to be done. Is your tooth infected ? If so, THAT is the toxicity that you need to be concerned about, NOT the "toxicity" of a root canal.
OK, now, in direct answer to your question, now that I am off my soap box, if you do NOT have the root canal done, the only other option is to have the tooth extracted. You are 33 years old. If you have the tooth removed now, you will be missing it for the rest of your life, which is most likely going to be somewhere in the vicinity of 50 more years. Do you REALLY want to be missing a body part for that long ?
If you are ADAMANT about the "toxicity" thing, just get the tooth pulled and be done with it.
Mike