That these creatures are a viable species of primates with exceptional survival traits inhabiting forested and wetland locations where they have so far eluded both scientific acknowledgement and extinction into modern times is a concept beyond the scope of reality for the media, general public and most everyone holding positions in government and science.
Modern society's perceptions about Bigfoot creatures are readily apparent on the Internet. Just Google-search the words "Bigfoot" or "Sasquatch" and see what comes up. Besides the original monster truck with over-sized tires of the same name, Bigfoot as an icon of pop culture enjoys a level of name recognition on the North American continent which exceeds nearly everyone running for elected office this year. Bigfoot is widely popular but not credible.
The old adage says "Any publicity is good publicity." But for BF researchers and investigators, such a high public image does not help our cause. YouTube is littered with costumed hoaxes and pranks-- some with higher production values than others. The "Messin' with Sasquatch" ad campaign is an entertaining and successful vehicle for marketing beef jerky to the target audience for Jack Links. Bigfoot or Sasquatch have made appearances in board games, as action toys, in roles in television and movies and as sports mascots over the past 50 years. Try mentioning "Bigfoot" or "Sasquatch" in general conversation and see whether folks take you seriously.
Only after you have your own sighting or personal experience with one or more of these creatures, then you must decide whether to cling to the popular belief that such creatures don't exist-- or accept the fact that they do. Much like faith, this is a personal decision. It is futile trying to persuade anyone else to accept the presence and proximity of such creatures until he or she is ready to believe.