Wolf
Judaism isnt a dead historical religion it is a living one based on mesora. We do what our parents did and they did what theirs did etc. OBviously given thousands of year there is some change along the way and I dont mean this facetiously but I do find it interesting to study when/why/ how things left or joined our religion (for example, when/why did metzora , Para Aduma, techeiles mong other mitzvos (none of which are (directly) related to the beis hamikdash disappear, or tracing the history of Simchas Torah a yom tov that didnt exist during the time of Chazal and it in its present form didnt exist until mid-late Achronim)
We dont have to look for the mesora of the mesora. Assuming a person grew up in a home/community that was yorei shomayim and shomer Torah umitzvos their is no harm in following their footsteps, and there may in fact be harm in looking into all their actions to determine if they were “correct”