My father (now 83) got the original iPad literally the day it came out. Yes, it was expensive but he's really loved it. He plays online games with my sister, nieces and nephews. We set him up to stay logged on to facebook to get the latest grandbaby pictures from my nephew's wife. My brother taught him to buy ebooks, too. He loves to read and is an inveterate insomniac so this alone was worth it. Now if he can't sleep and nobody is awake to play Scrabble, he can download a new book that catches his interest.
He has a computer (old G5 Mac tower) but rarely uses it now since the iPad can be used virtually anywhere in his home.
It's also reduced the number of "how to" and troubleshooting calls we get from him. For an 83-YO former pastor he does pretty good technically and recently figured out how to properly install the OS/X drivers on his G5 for a scanner/printer on his own.
Short answer: by all means get an iPad. It has the richest set of games and social media connections. My $.02.