hey,
I wonder, even if the probability so small is, if someone else get the same private key as me could he/she spend my Bitcoins and viceversa? would we have the same Bitcoin Adress?
That's not going to happen considering the probability and I'm sure if the limit for the private keys has been reach, no new users will allowed to create a wallet. We have so much words to use in private keys, and I'm confident that those system can generate that much. Though we might think about the system error and if you think someone is also using the same private keys with you better to inform the developer and create a new wallet right away, this can be a very rare situation.