Long List of repairs....Time to sell?

[mpe50]

Always loved the X5 since my mother bought one of the first E53's out. Love the look, and the way they drive. So I happily picked up a one owner '08 3.0si with around 40K miles from a local Audi dealer that got it as a trade in. I'm a decent DIYer and have always kept up with maintenance, so I've always intended on keeping it until 150k+.

It's now at 90k miles, and the list of repairs the last few years has me rethinking whether or not that's a wise idea.

40k miles
Radiator and hoses (done by dealer after pre-purchase inspection)
Valve cover gasket (Also done as part of PPI)

60k miles
Water pump and thermostat

70k miles
Coolant expansion tank
idrive controller module

85k miles
Oil filter stand gaskets

90k miles
Vanos solenoids

And now I'm looking at another $3,000+ in repairs to replace the Active sway bar and a leaking oil pan gasket (10 hrs labor).

Now I fully expected to have to do some repairs and maintenance, but the list at 90k miles is worrying. Has me wondering if I've taken care of all the major failure points already, and from 90k-150k should be smoother....or if it's just going to go downhill from here.