When a person dies, all his/her assets will be frozen. You need a grant of probate ( with Will) or Letter of Administration (No Will) to unlock it. Without it, all your assets can't be taken out and distributed to any of your beneficiary.

You may think you don't have much assets but surely you have bank account, UT etc. All these will be stuck.

I found it strange that you prepare will for others but not yourself.

Along the years, you will accumulate more assets but may forget to write a will