Omg dude, do you actually read what you're posting? What is the senju known for exactly? What is their "special ability"? They're said to have a very strong life force. What are the uchiha known for? The ****ing sharingan which allows them to master any jutsu outside of kekkai genkai. They know other jutsu, but use their eye techniques because their some of the most powerful techniques in the damn naruverse. Do you think itachi or madara or some other uchiha who had the ability to use Amaterasu or susanoo would think to themselves "hmm I think I'd rather use water style: water dragon jutsu just to prove I know other moves" no they don't. Like I said before, hashirama knows other jutsu according to your posts, but he rarely uses anything but wood techs. Why don't you make a post about hashirama and how he neglects the use of his other techniques.
Your assuming that all a Uchiha shinobi needs is eye techniques. Let me remind you that...
1) The Uchiha were known for doing "dirty" practices with their eyes to use Izanagi in battle and take other sharigans in order to do so. They did this so much that their own clan created Izanami to counter.
This is serious enough that their own clan wanted them to stop spamming these eye techniques.
2) The eye techniques are only unlocked through pain and hate. This empowers them as a whole but has the potential to degrade the shinobi into becoming the exact opposite of the Sage's final wishes--to rule through love instead of power. In other words, like Madara/Sasuke they can turn evil from unlocking all this hate inside themselves.
3) Once people started unlocking the MS, it became dangerous to continue "spamming" eye techniques. It literally causes you to go blind. This motivated Madara to take his own brothers eyes and this eventually led to his death. Are you honestly saying that this form of mindset is OK?!?!?!?
4) Since when does the Uchiha have
INFINITE chakra reserves??? I could see if we are talking about the Senju/Uzumaki, but this is Uchiha. Using Eye Techniques use up alot of chakra, and if they try to do a huge chakra move when they are low it could cripple them in a battle or even kill them, just like it did Kakashi.
SO YES THERE ARE REASONS NOT TO ALWAYS SPAM EYE TECHNIQUES.
Note: You brought up Hashirama and said he only spams wood techniques. WTF? Do you honestly think he beat Madara using only wood techniques? And outside of Orochimaru controling him, when in the world have you ever seen him fight?!? How in the world do you know he ONLY uses wood techniques??? The Senju are known for their mastery of many techniques, because they are descendent from the Sage.
#FAIL
-gHost Senju, K.U.S.H. Sage