Hey! :) Here are my suggested corrections: 

Thrills and frights

People are strange creatures. They might take offence when you scare them accidently but they are willing to pay money to have a fright, for example at amusement parks. Why is this? Why do we enjoy being scared?
I think everybody just gets tired with their everyday grey routine at some point and so to get away from collected problems and emotional anxiety we choose to devote our weekend to a trip to the funfair. (We desperately strive to get) We're desperate for this enormous burst of emotions and feelings and it is well known that the line between being frightened out of your mind and feeling happy all of a sudden is very blurry. Adrenaline rushing through your bloodstream while you are riding a rollercoaster with steep drops, sharp curves and loops makes your heart beat faster and you experience the greatest pleasure of excitement and fear simultaneously.
The majority of funfair rides such as rollercoasters, thrill rides, the Top Spin and bungee jumping are rather frightening. They are designed to make your blood run cold and to leave you shaking like a leaf afterwards. However, not all rides at fairs are scary. There are some children’s attractions too which are just slower version of adult rides, providing fun rather than fear. These attractions include bouncy castles, mazes, carousels and other ‘juvenile attractions’.
As for me personally, the most frightening and exciting ride I’ve ever been on was a rollercoaster in Chelyabinsk. I adore the feeling of the high speed, but at the same time being thrown in different directions and dimensions makes me break out in a cold sweat ("a cold sweat" is quite a negative-sounding description), yell at the top of my voice and feel extremely cheerful all at once.
Still there is one attraction which I’d very much like to visit, even though it’s not particularly connected with being scared but rather with experiencing spiritual pleasure. This is The London Eye. The main reason why I want to visit it is just to be able to comprehend all the beauty and the refinement of the city’s architecture and nature.
All in all, a feeling of intense fear sometimes can bring lots of joy and emotional discharge which is obviously beneficial for everyone, and that is why amusement parks are and will continue to be so popular.
All in all, (instead of repeating "all in all" you could say "in summary" or "in conclusion") my attitude towards experiencing intense fear is very positive, not only does it make us feel alive, it also brings huge amounts of positive emotions.

Rather than saying "brings joy" or "brings positive emotions" (which sounds a bit awkward) you could say:

- makes people feel happy/elated/joy

- gives a thrill

- is a source of positive emotions

- allows emotional release