You are not safe, even if you did not use any seed generator. I explained that already. There are 2 things, authentication and authorization. Right now you can only use a seed which is your private key, to login to your wallet, authentication. There is no way to protect this seed. That would be authorization, or put it simply, a password. IOTA does not have that simple but necessary functionality.
You're talking bullshit! If I knew your private key for the wallet, an encryption password would not prevent me from stealing your coins. The password would just help you if I would infect your system with a backdoor and your private key is stored in clear text on your hard drive.