don't worry friend, SEO future will be bright in future. But, If you want to become your future bright in SEO field. Then you need to continues Improve yourself and learn daily updated by google.
Well don't take all information you got here to seriously, they are all guesses as no one really knows what happens next for SEO (if Google becomes a parked domain then that's a different story) so you really should enjoy SEO while you can, earn lots of money from your blogs while it is still there.
Content is already king. Screening to present google algorithm i too think that it may become more strict with in web world.
As people are spamming heavily, I think the onsite seo will play a greater factor on the future as the SE is getting smarter
even today competition in seo is become tougher and still gets more tougher if google never stop evolving.
Future of SEO is bright, only thing we should work hard because lot of website want to get top page ranking. Other thing, in future seo work will started for other language websites also.