Comets Don't Make Sense

In realityI see them falling into the Sun after just a few million years of going around,and round.I see them going off in space after a few million years as their longated orbit gets bigger and bigger. I think its unreal to say they came out of the Oort cloud 2.7 LYs away,and the Oort cloud is just an idea of Oort.How can e be right with a name like Oort? Go figure Bert Ps Comets with 2 million mile tails just have to fade away