When we bought our 968 tip coupe in Nov 1998 it was as our main car, with a clunker Volvo estate for the odd occasion we needed 4 proper seats. It worked really well, surprisingly good at supermarket runs with the back seat folded, wife loved driving it as did I. Even used it for a camping trip to Le Mans 24 hour, carrying tent etc. without problem - and with space for some shopping on the way home! Routine maintenance was far cheaper than the Rover 820 turbo vitesse it replaced, about £250 for an annual 10k mile service with an additional £400 every 4 years for belts and rollers.
Go for it, you won't regret it - I've owned a 968 for almost 20 years now and am dreading the time when advancing age means I have to part with my cab. Provenance and maintenance history is key, look carefully, you may have to be patient to find a good one, but you won't regret it.
Unfortunately the 968 forum on here is rather quiet, despite Ken's efforts, so it's worth registering on the porsche968uk forum where you'll find loads of active and helpful 968 owners - and often first dips when someone decides to sell.