Its a real shame really while these kind of programs can generate millions of addresses why not have a simple option to input millions of private keys from a text file that otherwise would take forever to convert using python to convert using gpu and save the output to text file or otherwise save addresses with the matching pattern along with private keys
Ahh, maybe because that's not the reason why these type of programs are written? 
Based from your description, it's far from vanitysearch's main purpose: "generating vanity addresses"
I’m not trying to be disrespectful but you are not very genius regarding this it seems if you reread it then you would understand it does indeed fits the purpose I clearly said that if it cannot save all the addresses then it should do its job and search for pattern and save addresses that match the pattern so tell me again does it not fit the "purpose" what is the difference by randomly brute-forcing the private keys and checking for the pattern and doing the same by taking millions of private keys? or will it lose its functionality by doing so?.