80K Motorhome 2018 and still walking about with a box of s..

[MCR01]

Been looking at second hand motorhomes and, of course, some new ones.
I can't believe that in 2018 you can pay 80K and still be expected to walk around with a cassette of st.
Is it really like this? Every modern yacht and canal boat has a holding tank, sure you nave to connect a hose and press a button.
Are you really still walking about with smelly cassettes as if it were the 1970's?

[MCR01]

OK so you would have to move your motorhome to discharge the waste tank; is this such a problem?
Is weight such an issue? What would a 150 litre plastic tank & pump weigh, perhaps 25kg empty?
From the replies so far it seems that the technology hasn't advanced a great deal since toilet "cassettes" were invented. Anyone care to put a date to that invention?
No wonder the Jeremy Clarkson's of this world hold caravans and motorhomes in such low regard. LED lighting, self aligning satellite dishes, solar panels, satellite moving map navigation systems, Euro 6 diesels and you are still walking about carrying a cassette of sh!t!
Please, someone tell me there is an alternative system.

[MCR01]

So RMB is the answer.
Anyone have any links to RMB reviews, problem areas or advice (recommendations) about RMB dealers? All the secondhand RMBs I have found are in Germany, some nearly in Poland. It's a long drive from SW France, anyone have any good experiences with German RV dealers near major airports? Thanks.