If you support free trade, and an economy based on free trade, then you should support TTIP and, to be honest, you'll probably find you hardly notice it's effect.
I've done a detailed examination of what we currently know about the content of TTIP, from the (rather technically specific) perspective of my job as a public procurement specialist, and I concluded that TTIP will have almost no impact on the way in which public bodies such as local councils, government departments, etc, go about their work.
There is quite a lot of scare-mongering which is probably somewhat misplaced when you remember that the UK, for example, is already signed up to various free trade treaties.
For example, there are concerns that the agreement will open up Europe’s public services to US-based companies, resulting in further privatisation of the UK's National Health Service and other public services.
In fact, under TTIP, the EU delegation has confirmed, in writing, to Member States, that:
• Member states do not have to open public health services to competition from private providers, nor do they have to outsource services to private providers;
• Member states will remain free to change their policies and bring outsourced services back into the public sector whenever they choose to do so, as long as this is done in a manner respecting property rights (which in any event are protected under UK law);
• It shall make no difference whether a member state already allows some services to be outsourced to private providers, or not.
So to take one specific example, the idea that TTIP will somehow hasten the privatisation of the NHS is likely to be untrue. Some privatisation of the NHS is *already* happening, I'd say - but that's nowt to do with TTIP.