Calcium is vital for healthy teeth and bones

If the body notices that not enough calcium is circulating in the blood, it will use hormones to reduce the amount put out by the kidneys in the urine. If not enough calcium is absorbed through the gastrointestinal tract, calcium will be taken from the bones.
If your dietary intake of calcium is constantly low, your body will eventually remove so much calcium from the skeleton that your bones will become weak and brittle.
There are lots of alternatives in getting calcium everyday. Like for example if you're always on the go because of your work and sometimes you skipped meals. You can have or carry with you some high protein bars that can be bought from any store. If you don't like the idea of taking tablets why not try calcium powder supplements that you can just dissolve with what you already drinking without altering the taste or texture of beverages.
It is much better anyway to get calcium from foods (which also provide other nutrients) than from calcium supplements. If you have difficulty eating enough foods rich in calcium, you might consider a calcium supplement, especially if you are at risk of developing osteoporosis. It’s a good idea to discuss this with your health care professional.