There is a trade-off between security and convenience when holding cryptocurrency tokens. I see that you prefer more convenience (and some revenue) over security by using a third-party wallet. 🕵️♂🤔
You can still use a third-party wallet without compromising a lot of security by using open-source apps which host your private keys for you, but they are stored encrypted on their servers and cannot be decrypted without using your password. Just be careful not to lose your password, since there will be no "Forgot Password" in this case. 🕵️♂️