</font><font color="blue" class="small">( I been trying to grow black berries for three years and you are cutting them down. )</font>
Like Highbeam said, come get all you want.
These aren't high grade domestic berries, they are an invasive non-native variety. See the attached picture - nine of ten berries are unripe and bitter, the tenth one (dull black at bottom) will be sweet but has started to mildew. It will be hard to reach past the thorns protecting that one edible berry. There are even nasty thorns on the underside of the leaves.
We normally cut our way in past the shielding canes to get to the clusters. Then pick only a couple of ripe berries per cluster. I spend more time digging tiny thorn tips out of my fingertips and the back of my hands than eating berries.
A post over in Highbeam's blackberry thread described a variety of thornless berries that could crowd out these - maybe that's what I should grow.