Canned food is cheap. This is the most obvious benefit of eating canned food, and a perhaps the main reason why students on a low budget eat canned vegetables and fruits regularly. The price benefit of canned food is particularly obvious during winter months when most vegetables are out of season and will have to be shipped from abroad.
Source: http://www.healwithfood.org/safety-concerns/pros-cons-canned-vegetables.php#ixzz4M70ngmoQ