I don't see tablets going anywhere soon. There are some things it just does better than both a phone and a laptop. What I do most on my iPad is read textbooks on Inkling, books on Kindle and PDFs. For that, neither a phone nor a laptop will be as good.
When I'm not at home but have some extra time to browse the web, a tablet is better than a phone. When I'm not at home, I don't need the computer power of a full operating system (my work doesn't involve anything computer related), so a laptop makes no sense for me.
In the end, each person has their own ideal setup of gadgets. You're not supposed to have all of them, watch + phone + phablet + tablet + laptop + desktop. Just choose the ones that work for your particular use.
When I'm not at home but have some extra time to browse the web, a tablet is better than a phone. When I'm not at home, I don't need the computer power of a full operating system (my work doesn't involve anything computer related), so a laptop makes no sense for me.
In the end, each person has their own ideal setup of gadgets. You're not supposed to have all of them, watch + phone + phablet + tablet + laptop + desktop. Just choose the ones that work for your particular use.