Okay, if you are still thinking 'but it's just so hard' (and it is, I agree) here's an Economic approach:
A sure fire investment will cost between 5k - 15K. Assuming that your alternative is to leave the same amount in the bank for a year at current exchange rate (1%), after one year, that money gains you 50 pounds - 150 pounds, in the bank (in a current account) or say 150 pounds - 450 pounds in an ISA. That's assuming you don't need to spend it now.
You may not have 5K/15K to hand now, but some solicitors will deduct their fees from the settlement and not upfront.
What will that 50 - 450 pounds per annum buy you per year?
However, if to obtain a settlement, you will receive any amount above the legal fees, then you can still put that into the current account/ISA and have that earn interest, which your children can then use to pay for Uni/a future home/have wicked parties.
In fact, you could do the latter too!
If, however, you pay 5/15K and your settlement is anything less than that - they yes, walk away now. It will come down to the marital assets.
Put your Emotional head on:
This is to enable your children to have opportunities, that otherwise, they would not get.
Put your Practical head on:
Employing a solicitor is an investment. They take the strain. The law is actually quite specific dividing up matrimonial assets - it's just that the better off participant sometimes thinks the law is an ass. It is merely a process to ensure that the law is applied to your unique circumstances.
So once you decide to fight your corner, you employ someone to get in the ring. And then you cheer loudly from the sidelines.
(And that, Dear Husband, is why I have my own solicitor).