[Closed] bike help/advice/choice

I need a bit of help, please.

I have been riding for a while, and until recently had a Kona Four Supreme full sus which I loved.

In a mad moment of wanting something new and shiny (we're all bike ho's at heart!), I decided to sell the Kona and go for a hardtail; I bought a new Marin Palisades Trail a month or so ago.

I love the Marin and it looks great, but after a month of riding (approx 150 miles) I just don't find it that comfy.

I should say at this point that I live in East Anglia (not very hilly) and spend most of my time on singletrack, bridleways and roads, with monthly trips to my in-laws who live close to the ridgeway in Berkshire (more hilly)........and a yearly trip to Wales.

My question is: Am i just being a whimp with the hardtail, and the back/butt soreness is just a "breaking in" period while i get used to the lack of rear suss? Or am i just a fragile type, and more suited to full suss, even though a full suss seems overkill for Suffolk?

Anyone else experienced this?

Thanks