the effects of technology on the brain

Globalisation has been made possible due to the mass development in technology. Although news and communication has been made available globally due to 24hour news channels, the twitter sphere and even this blog; I call for deglobalisation when it comes to the computer field. I genuinely wonder if my grandchildren, if not great grandchildren, will ever learn the skill of writing. However, my concerns with technology are much greater than this. I believe education is in decline.
Spelling is only descent due to predictive text. Homework and essays tend to be submitted now online resulting in the tendency of 'spellcheck' doing the work for the pupils. Whenever in doubt, one must only type in how the word sounds to them, the computer then recognises it underlining it in red, the correct word is selected and fails to be restored in the brain. Spell check also has the option to correct all, consequently allowing the human mind to not even recognise its continuous blunders, leaving room for the same repetitive mistakes in the future.
Even when using search engines, if there is a case of incorrect spelling, the server would ask 'did u mean this...' / 'search for this instead' which most of the time will be clicked subconsciously, instead of registering the error.  What is decaying the mind even more is text language used whilst communicating online. Abbreviating provides efficiency to the conversation not only through speed but to compress thoughts into a word limit. When used consistently in this format, it starts to appear in everyday life, and slowly your spelling deteriorates, forgetting the actual lettering of the word you once knew.
I was talking about the use of laptops in exam with a peer recently and was asked why I don't use one. My response was quite simply was that I am an appalling typer. His reaction to my comment was 'spellcheck.' It shocked me that people are so reliant on spell check that they couldn't imagine even in an exam a laptop without it. Is this good for the upcoming generation? Not being able to fend for themselves without reliance on a computer?