I agree with much that has already been said here! I needed to make a Will quite early in life, due to a failed Marriage, and the fact that I was made a "Ward of Court" as a Child. I didn't want my former husband claiming anything, I had never known my father, and wasn't keen on my mother - so this was legally required. Since then, I have been twice widowed, and struggled immensely with Wills, and Children from (spouse's) earlier Marriages. Still have an ongoing situation where I am obliged to keep/maintain a property (originally a marital home) from my late husband, and to leave it to his children when I die. One child has already passed away (drug user) - both hated me with a passion, despite their mother having died some twenty years before their father and I met!
DEFINITELY make a Will, make it clear and unambiguous. If you have a good friend or relative who would be willing to deal with your Estate (provided that it is not complex), buy them an easy to follow book which advises how to deal with Probate, and name them as Executor/Executrix. Far cheaper than a Solicitor. For complex matters, however - you DO need proper legal advice.