do not put all eggs in the same basket.
I have read this one somewhere in a different thread and it is really true. If you put it all in one basket you might lose it all with just a blink of an eye.
Does this also apply on wallet? I mean, is it better to split our btc into different wallets instead of using one main wallet which collect all the money we have?
Yea I agree with you never keep your all coins in one wallet this could be very bad for any one as in start I done and Mintpal run with all and never came back now I am using different wallets and exchanges for this