Before I started budgeting, my attitude about cash wasn't the same as it is now. I liked cash but thought it was bulky and uncomfortable so as a result, I never carried it. That all changed when we started to have budget items like an allowance. I still think it's bulky but it forces me to stop and think before I spend.
Now my wife and I carry cash for certain budget items. Those include: entertainment, household, groceries and our allowances. Most everything else is a bill that gets paid by check or automatic withdrawal.
Savings
Shortly after we started budgeting we realized that buying things with our debit card caused us to overrun our budget. The groceries budget item in particular was the worst. My wife and I decided to take 75% of our grocery budget out in cash every pay period. Then, once a week, we both would go to the store and do the shopping for the next week. It became something we both looked forward to as it became a sort of strange date. This really helped us.