If you don't ask for money for what you do, then you are saying that what you do is worthless. You probably don't actually believe that, and the only reason to sell your work for less than the most basic labor is because you don't know how to get paid properly. But customers see your pricing and conclude that designers do not need to be paid even the normal minimum for other kinds of work.
If you keep working like this, you will find yourself unable to ever get a design job that pays well. Everyone who calls you will do so because you are cheap. When you go to visit clients who have money to spend, they will not want to hire you. Not because their is anything wrong with your design; but because they are not designers, and so they will try to estimate the quality of your work by the visibility of your financial success. If they notice nothing that suggests you can make money, then they will assume that you can't, and they will assume that the reason you can't is because your designs are no good, and hire someone else. Later, when you want to get married or have a family or just enjoy a better standard of living, but you can not afford to do so because you undervalued your work, you will realize that you designed yourself into poverty. It's true that some very rich/successful people dress or act like they don't care about money. This is because they have so much money that they don't have to care about what clients think. They have agents who take care of all that annoying business stuff for them. Agents only work for people whose work can be sold for high prices, because agents only get 15%, on average.
A lot of creative people fall into this trap, I have made this mistake on some occasions. It is a bad pattern, for you and also for your colleagues in the same profession. Also, it's insulting to people who work in offices or flip burgers. Maybe they would like to work at something creative, but when you price your work so low you are demonstrating that creativity is worthless, and that skill and hard work do not deserve a reward. Here's my advice: it's OK to do some work for free for your friends and family, but when you work for money your minimum should be 5 x the minimum for a 'boring' job. Some people will refuse to pay so much, and then you must refuse to work even if your bank account and your stomach are empty. Many will agree. You should use your price to drive bad clients away. Good clients will either pay or negotiate. If you do not make them work in negotiation, they will understand this to mean that you are not going to work on their commission, and hire someone else.
If you cannot make a living this way, then get a job flipping burgers. First you will learn some humility, second you will get free food every day, third you will have some more financial security and fourth you will be very tired when you go home every day. Now, do a few hours of design work every week too. Of course, it will be much more difficult now because you are exhausted by working in a hot kitchen before you draw a single line. Now you will start to understand the value of time, and charge accordingly.