Dear Sasha: Troops that do not need bylaws are fortunate. When I took over as committee chairman several years ago, the committee had serious problems with endless bickering and being unable to make decisions. (Perhaps this is because our troop is located in the Washington, DC, area, where pointless debate is sort of the local pastime!) We had a set of bylaws to which was appended a "parents' guide," which was a mishmash of rules and advice. The bylaws were too aspirational to be useful.
We are sponsored by the Catholic Church, which has its own rules and procedures, especially on youth protection, so we had a raft of issues to deal with and were not progressing well at all.
The first thing I did was impose Robert's Rules of Order, which is actually a wonderful thing if you understand the basics. Essentially, everyone gets his or her say but the will of the majority prevails. This avoids the vague "consensus" in which most people actually feel they have not in fact been heard. Decisions should be clear to all concerned. Only a majority vote gives you that clarity.
Then we reformed the bylaws to set up clear rules about committee operations. The committee has run smoothly ever since. We have an extremely successful troop with excellent fundraising, high-adventure activities, many Eagles, etc. (The troop had over 70 Scouts during my time and now has almost 100.) I won't say that solving the bylaws problem was key to this, but it avoided the time often wasted by unproductive meetings. Our biggest asset is an excellent Scoutmaster, and during my term as chairman (which lasted six years), I felt my biggest job was to support what he was doing and to keep the committee moving in that direction. With many lawyers, business people, and bureaucrats around the table, I felt that a firm structure was essential. You might not need it, but in cases of conflict and serious disagreement, bylaws come in very handy.