fun/personal defense/survivalist
fun is kind of a personal thing, some people (including me) will find more fun in taking a bolt action to it's limits, trying to shoot as accurate as possible, other people have fun in plinking with a semi-auto at schort range. For the other two criteria it's even:
personal defence: a semi-auto carbine would be the best. But a bolt-action may suit you well too. At SD ranges you really can't miss with any rifle, so if there aren't two assailants at once, the bolt action will do. And if there are multiple assailants, the overall survival chances are slim no matter what you're going to use. Only tactic seems to shoot from cover, so in this case a bolt-action would practically do the same.
survival: a bolt action wins hands down. The main traits of a survival rifle IMHO should be reliability, robustness and accuracy. In that order. Semi-auto rifles tend to require great amounts of care to function properly, including the most reliable long stroke gas piston designs. There are also a lot more parts that can break etc.
So if you really consider spending time in the wildlife with your rifle, go for a bolt-action all the way. Savage or the Howa 1500 are good and not too expensive rifles for example.
If you really want a semi-auto, I'd advise a Ruger Mini-14 for your intended use. AR types may be a little more accurate, but require care, and since you're probably not going into competitive shooting, the minor difference in accuracy is not that important.