Where you sit is where you stand. Those who have done lots of weapons training will always advocate it, those who do not, won't. As for me, I stand with Szczepan on this one. Only David V, who uses weapons, agrees that they may not not always necessary -- meaning, he has a balanced opinion. Also, if you check out his movies, you will see that his weapons work is very good. But I'll debate him on one point
David V: Do practitioners of the oar or the various "farming" utensils of other arts need to get in a boat and row or get in the field and do some farming before they understand these weapons and/or garner the benefits of training in them? I say, no.
I say, it would help. A ferryman who rows his boat across the river everyday will know his oar very well indeed and would probably make quite a formidable opponent - with an oar - with little or no martial training at all. Also, here in Korea, I often see teams of women cutting grass all day long with their sickles. All day long. Who has more skill / who would you rather face? - A Karateka who knows a sickle kata (kama), or one of these women? It is not necessary to know how to row a boat to fight with an oar, or cut grass with a sickle, but it could help
And imagine hundreds of years when fighting erupted in the countryside - people would take up tools (weapons) they were 'familiar' with.