multiple toobers in archives...grrrr
Anyway...
A lot has been said about the Xp system, although it's a tough grind I believe it's purpose is to train you properly for each weapon, gadget and attachment you aquire. By playing hours/days and so on you begin to understand the ins and outs of each level, each gadget, the best time to rush, when to camp, what loadouts to use and when to use them.
Imagin when you start out everone has every gun. You really cant expect to have an exciting game when everyone (including you) is a level 1-3's all using proxies, toobs and themal scopes, you wouldn't have the experience to use them and the game would get boring very quickly (well maybe not...but thats not my point).
To put that in perspective, i really hated the terralite when I first obtained it but that was only due to the fact that I had very little experience with it. 200K xp later and having used it heaps I now love it and can rack up 10+ kill streaks regularly. Similarly at the moment I hate the masterton, everytime I play as zurkovski, that's because I havent the playtime or experience yet to wield it's furious power, however 700K xp from now and a few more days worth of playtime and I'll own!
So for anyone who uses the toob (because it's fun and makes things go BOOM), I say go on and enjoy it, but know that you are only limiting yourself from improving.
I've never seen anyone with a tube get a 2/1 KDR (more like 2/3). You can only get 2 BOOM's per life and will generally end up killing yourself in the process. Your XP per game will average around 200 per game and it will take you 10 years to level up to the really good weapons (anova, strata, ivana etc).
Finally, all I can only say to those who complain is forget about it, you can't change it. Just be happy in the fact that when you get a toober ingame it gives you a purpose, a drive, a goal. Killing that level 21 toober and finishing with 800xp and 9 accolades is all you need.
Trust me, when you're pushing through the 40-50's and seamingly getting nowhere, it's that toober, that purpose that will get you through.
Cheers, that is all