In my 56 years of being a Christian, I've seen a lot of pastoral styles. There are the "strong, silent" types who give off an air of stability, strength, assurance, and rectitude. They are friendly but not transparent; you don't really know who they are. Slightly different are the "macho" types; I knew one pastor who used to wear a sidearm visibly even while in the pulpit. These are more the tough guys. And that appeals to some, country as well as city folks.
Some pastors are distant emotionally, but still outwardly friendly. And I've seen others who are mature emotionally and spiritually, yet have the inward confidence to make themselves vulnerable, exposing their failures and flaws – and the Lord's graciousness toward them, yet with wisdom knowing that certain areas are not appropriate to share generally.
It also depends on what sort of congregation they care for, and what the pastor's vision of community and relational maturity is. Some folks hunger for authenticity of character and relationships, with depth interactions – though this is usually feasible only in small churches. Such a pastor will "model" (to use an educational term) a certain openness and honesty in the attempt to facilitate – to draw out – these qualities in others.
Myself, I've changed as I've gotten older, or rather, as I've greatly aged. I do let the congregation know who I really am, which being transparent accomplishes – of course transparent within reason and propriety. I don't generally share inward things I might be struggling with as I don't want to expose them to issues that might confuse them or expose them to spiritual depths they are not ready to deal with.
As I've gotten older I have much less confidence in my strength and wisdom, but that's because I've seen what I am really made of, and have learned to depend on the LORD for His strength and wisdom, and the amazing thing is seeing Him answer so many prayers for help in these areas. I've learned to much more live by His promise when He spoke with Paul, "
'My grace is sufficient for thee: for My strength is made perfect in weakness.' Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me. Therefore I take pleasure in infirmities, in reproaches, in necessities, in persecutions, in distresses for Christ's sake: for when I am weak, then am I strong" (2 Cor 12:9-10KJV).
He sustains me as I get weaker. Plus I have a good wife, and her worth is far above rubies or gold! (Prov 31:10,11,12 ff). If I have my wits about me at all I must give Him the praise for it. From a poem I wrote a little while ago:
…the paradox of His strength made perfect in our weakness
His old wrecks warriors filled with His might on the battlefield