Can you kill your clit?

Question

I can only cum with my vibrator, clit doesn’t feel sensitive when I use my finger or have sex.

Answer

While a very strong vibrator can numb your clitoris (and hands holding it), this is very temporary. It is more likely that you trained your body to just orgasm in this one very specific way.
Over time, some of us develop habitual body positioning and techniques that facilitates pleasant sensations and helps trigger orgasm. 
Doing this repeatedly, your brain starts to carve out neural pathways associating a certain very specific position or technique with just the right nerve endings leading to orgasm. Just like a river carving out a path over time, your brain and nerve endings carve out a neural pathway. And just like the river, it takes time and many floods to change its path.
It can take quite a bit of exploration and time to train your body to orgasm in other ways. You are the only one that can do that. Stop using your vibrator and explore what else gives you pleasure. When you find something, find ways to increase the pleasure. When you do not orgasm during that session, it is not a failure, it is just another session where you learned something new about your body. This retraining can take sessions over days, weeks, or even a month or two. Try different positions and different touch. Also remember that even though your clitoris is your main pleasure organ, other parts of your vulva, breasts, and vagina also contributes to your arousal and experience of your orgasm.

Answer

Ive managed to do something similar before. I find if you put the toys down for a while it comes back.

Answer

You can become over sensitised to it if you over use toys 
But most woman can’t orgasm from penetration alone and need clitoral stimulation to finish so this isn’t uncommon

Can you kill your clit?

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