i've been hosting MC Servers for about 2 years, and servers in general for 3.
when i want to make a server on my computer if i cant afford a host at the time, i have to port forward for that game.
Port forwarding takes about 1-2 minutes ~_~
Also, your "port forwarding" cant break.As many people have said, you probally screwed something up.No offense.I've never had trouble with port-fowarding, and i've been through plenty of ISPs and Routers.
If you want me to try to fix your problem, feel free to add me on skype
xdefender2010x
or shoot me a PM, and i'll try to help you out.