You can completely remove the need to enter a password for sudo: How to run sudo command with no password?
I don't see any other way though, it's either entering the same sudo password or removing it.
I have a long password (about 20 characters) and it doesn't bother me. Also, entering a few sudo commands in succession only requires you to type the password once...
It doesn't bother me because my password is easy to type fast. Lots of people make a password too complicated, either to remember or to type. Personally I think this is wrong. If you have a long password that is easy to type, people can't follow your keystrokes when they're watching. If you do have a complicated password that takes time to type. There is lots to be said about passwords and they're never-ending discussions. I'm personally convinced that it's better to use a long password (even using normal dictionary words, including spaces and other punctuation) than a complicated short password. The longer the password, the longer (exponentially) it takes to crack. Using common sentences (e.g.
I had bacon and eggs for breakfast.), makes it easy to remember, very strong but also easy and fast to type. You will find people who strongly object because they're all dictionary words, but I can assure you they're more difficult to crack than e.g.
P@5s\/\/0Rd, which is considered by most as a very strong password.