There is a lot of myth about Ducatis needing frequent, complex and expensive servicing.
In fact, the engines are pretty bullet proof.
There is the need to change cambelts every couple of years but that is a dead simple job and is well within the capabilities of any home mechanic.
Valve clearance checks are needed less frequently, but that too is not a complicated diy job.
Actual adjustment of the valve clearances is a tad more tricky but this is seldom required .. I've adjusted two valves only, in 25,000 miles.
There are excellent video guides on all this by Ducatitech / Chris Kelly .. see links below.
Also, the aircooled, 2-valve, original style monsters are a delight to work on for the home mechanic.
With just a turn of the key and the flip of a latch, the seat is off, the tank is raised and you are straight into the heart of the beast.
My own 750 has never seen a dealers workshop in its 25k milkes, apart from its initial service.
https://www.youtube.com/watch?v=9vzPZ84ZRjU
https://www.youtube.com/watch?v=dIj3nSJGPZw
https://www.youtube.com/watch?v=3WQY1MRlmH4