does swear still have any meaning?

my friends frequently say this: "I swear! I really don't like it!" or "It really is hot! I swear!" and there are lots of other swears.

i am just wondering, why is so easy to swear? does swear have no more meaning?

in my 17 year life, i have just said "swear" for 2 times. the first is when i was still so small, and i swore to my mom, then she taught me for the first time about swearing. since then, i never said that word in ease. the second time was when i was playing soccer and my friend convicted me that i made a hand-ball. i was so sure that i didn't do it i said: i swear the ball didn't couch my hand! and i think that's the last time i swore.

my parents and other older generations (40s-year-old-people), most of them, teach me not to be too easy to swear. why? they say, and i do very agree of it: swear means promising with your whole soul to people that your words are true and none a little of it is untrue. it means that it is sooo damn true or 1000% true.

the freedictionary.com also says: swear means to make solemn declaration, invoking a deity or a sacred person or thing, in confirmation of and witness to the honestly or truth of such a declaration. swear can also means to curse.

we can see how deep a swear is, much much deeper than a promise.

nowadays, because people swear easily, i didn't really trust people when they say "i swear". they even lying using "i swear"!!