:shrug: yes, struts wear out normally on all cars I guess. It's difficult to judge without knowing specifics of how you drive, how old those tires were, what your alignment was & how much punishment your suspension has taken in 60K miles...etc... etc...
Yes you can upgrade your suspension; this forum is a wealth of information on that subject. It depends on what your budget is. Personally, I'd get a pair of OEM struts and call it good. Unless you plan on buying a ton of upgrade suspension parts (swaybar, endlinks, control arms, bushings, brace bars, coilovers, etc...) for a lot of money- it's not worth slapping some 'upgrade' struts on an otherwise stock suspension.