multiple network access stay or go??

[AweShucks]

After trying several programs that offer multiple network access I have to wonder.....Is it all that great?
Best example is WinMX. Access to opennap and its PNP seems to have done little but increase queueing. Not on just the PNP but on opennap also. Do we really need multiple access when protocals like the PNP or Fastrack are more than self supporting alone?? But taking and not giving anything back I feel is a bit on the selfish side of things.
I understand that we all want files and good search results but is this idea actually doing anything besides increasing queue time?? At one time "just after that one network died.. Nap something" I justified multiple access as did many others because the state of filesharing was a little unorganized. But is multi access a must have anymore?.... and would we be better off without it on Networks that have a good userbase already?.....