Yes, why don't we all play nod cause gdi sucks? :D gdi is more challenging and for competing in the top ranks you need to have a team which supports you. gdi is worse:
1. on worlds with FA on (def needs to be 1-2 level higher then nod to withstand the attack of forgotten)
2. moral worlds on (Nod is best in farming, you need less repairtime and can shoot 3 outposts where gdi can kill 1 because less simulate time),
3. Killing structures in general
4. Upgrades for the late game units
5. pvp offense
It's fine when there are some advantages and disadvantages between early & lategame. But these facts i just mentioned, won't change at all and that's sad. There is no late game for gdi, nod can do everything better and i don't know why people don't wanna change something to balance these 2 fractions a bit more!
And please dont talk about PVP. The only good thing in PVP is that gdi can stun inf and vehicles in defence.. Nod has stronger tanks, inf & air
So yes, gdi has a use: Sell your offence, build up a defence with all upgrades and place your base in front of your pvp cluster :D